{"id":207821,"date":"2023-05-18T19:52:48","date_gmt":"2023-05-18T19:52:48","guid":{"rendered":"https:\/\/blog.hannaservice.eu\/izaberite-pravu-elektrodu-za-svoje-uzorke\/"},"modified":"2023-05-24T11:06:13","modified_gmt":"2023-05-24T11:06:13","slug":"izaberite-pravu-elektrodu-za-svoje-uzorke","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/sr\/izaberite-pravu-elektrodu-za-svoje-uzorke\/","title":{"rendered":"Izaberite pravu elektrodu za svoje uzorke"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"207821\" class=\"elementor elementor-207821 elementor-207008\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-74ff81c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"74ff81c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-de0a8d6\" data-id=\"de0a8d6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c3fc1ba elementor-widget elementor-widget-html\" data-id=\"c3fc1ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>.entry-content p {\n    margin-bottom: 0.8em;\n    line-height: initial;\n}\n#custom-img-header {\n    background-position-y: bottom;\n}\n<\/style>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-71287df elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"71287df\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6872492\" data-id=\"6872492\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-858b7ea elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"858b7ea\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-ce5e787\" data-id=\"ce5e787\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b2620ea elementor-widget elementor-widget-text-editor\" data-id=\"b2620ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3><strong>UZORCI MOGU BITI SLO\u017dENI, ALI MERENJE MO\u017dE BITI LAKO.<\/strong><\/h3>\n<p><b>pH vrednost<\/b> je klju\u010dni parametar za mnoge primene.<\/p>\n<p>To je osnovni parametar u <b>prehrambenoj industriji<\/b>, za optimizaciju nikla ili bakra, za obezbe\u0111ivanje optimalnih uslova za zdrav rast biljaka i jo\u0161 mnogo toga.<\/p>\n<p>Razlog je taj \u0161to pH vrednost uti\u010de na mnoge biolo\u0161ke i hemijske procese kao \u0161to su <b>proliferacija\/opstanak<\/b> <b>mikroorganizama,<\/b> aktivnost <b>enzima<\/b>, hemijske <b>reakcije<\/b> i ravnote\u017ee, rastvorljivost <b>soli<\/b>, itd.&nbsp;<\/p>\n<p>Naj\u010de\u0161c\u0301e (a i najpreciznije) pH vrednost se meri pH metrom sa <b>staklenom elektrodom.<\/b> Me\u0111utim, dobijanje pravih i stabilnih vrednosti mo\u017ee biti <b>te\u0161ko<\/b>, posebno u <b>nekim uzorcima<\/b> (kao \u0161to su hrana, zemlja, kreme, boje, uzorci sa visokim pH, itd.<\/p>\n<p>Va\u017eno je razumeti <b>\u0161ta pH zna\u010di<\/b>, kako funkcioni\u0161e <b>pH elektroda<\/b> i kako merenje mo\u017ee biti lak\u0161e kori\u0161c\u0301enjem <b>prave elektrode<\/b>.&nbsp;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-39a9337 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"39a9337\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-791a021\" data-id=\"791a021\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9449746 elementor-widget elementor-widget-heading\" data-id=\"9449746\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Hanna Instruments je vodec\u0301i proizvo\u0111a\u010d pH elektroda i nudi veliki izbor elektroda dizajniranih za specifi\u010dne primene.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e5741e7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e5741e7\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e39eab6\" data-id=\"e39eab6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1cde4e3 elementor-cta--layout-image-left elementor-cta--mobile-layout-image-above elementor-cta--valign-middle elementor-cta--skin-classic elementor-animated-content elementor-widget elementor-widget-call-to-action\" data-id=\"1cde4e3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;}\" data-widget_type=\"call-to-action.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-cta\">\n\t\t\t\t\t<div class=\"elementor-cta__bg-wrapper\">\n\t\t\t\t<div class=\"elementor-cta__bg elementor-bg\" style=\"background-image: url(https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2022\/11\/Elektrode-Slika-1.jpg);\" role=\"img\" aria-label=\"\"><\/div>\n\t\t\t\t<div class=\"elementor-cta__bg-overlay\"><\/div>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-cta__content\">\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-cta__title elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\tPetrohemijska industrija\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__description elementor-cta__content-item elementor-content-item\">\n\t\t\t\t\t\t<p>Hanna Fotometrijske elektrode za upotrebu sa na\u0161im<br \/>\nautomatskim potenciometrijskim Titratorom<\/p>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-cta__button-wrapper elementor-cta__content-item elementor-content-item \">\n\t\t\t\t\t<a class=\"elementor-cta__button elementor-button elementor-size-xl\" href=\"https:\/\/blog.hannaservice.eu\/sr\/petrohemijska-industrija-odredjivanje-tan-i-tbn-fotometrijskim-sondama\/\">\n\t\t\t\t\t\tSAZNAJTE VI\u0160E\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6ecd8ae elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6ecd8ae\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-973941e\" data-id=\"973941e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-7fff750 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7fff750\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-86f2bad\" data-id=\"86f2bad\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-44bd017 elementor-widget elementor-widget-heading\" data-id=\"44bd017\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">1. \u0160ta je pH?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-81e2968\" data-id=\"81e2968\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1cb366d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1cb366d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e2e4042\" data-id=\"e2e4042\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4c8e09b elementor-widget elementor-widget-text-editor\" data-id=\"4c8e09b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>pH vrednost je merenje koliko je aktivnih jona vodonika prisutno u uzorku. U praksi se \u010de\u0161c\u0301e koristi termin konceracija umesto aktivnost. <\/p>\n<p>Jednostavnijim re\u010dima, <strong>pH je mera koliko je vodeni rastvor kiseo ili alkalan.<\/strong><\/p>\n<p>Termin \u201epH\u201c ozna\u010dava \u201epondus hidrogenii\u201c ili \u201epotencijal vodonika\u201c i prvi ga je uveo danski biohemi\u010dar Soren Peter Lauritz Sorensen 1909. godine. <br \/>Tokom svog istra\u017eivanja, \u010desto je imao potrebu da izmeri koliko je uzorak kiseo i smatrao je da je pogodnije da zapi\u0161e koncentraciju vodonikovih jona u dekadnoj logaritamskoj skali (na primer, 0,0000001 mol\/L H<sup>+<\/sup> postaje pH 7). pH je tada definisan kao [1]:<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-dfcc45b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dfcc45b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-e5dbf01\" data-id=\"e5dbf01\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c9d6625 elementor-widget elementor-widget-image\" data-id=\"c9d6625\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"369\" height=\"55\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/formula-pH-1.png\" class=\"attachment-large size-large wp-image-207159\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/formula-pH-1.png 369w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/formula-pH-1-300x45.png 300w\" sizes=\"(max-width: 369px) 100vw, 369px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-c06223f\" data-id=\"c06223f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-de80513 elementor-widget elementor-widget-text-editor\" data-id=\"de80513\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>a = aktivnost<\/p>\n<p>c = koncetracija <\/p>\n<p>H<sup>+<\/sup> = vodoni\u010dni jon<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c68ba3 elementor-widget elementor-widget-text-editor\" data-id=\"9c68ba3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>pH vrednost se tako meri na logaritamskoj skali od 0 do 14, pri \u010demu je 7 neutralna (slika 1).<\/p>\n<p>Kada se u vodu doda supstanca koja se zove kiselina, ona povec\u0301ava koncentraciju vodoni\u010dnih jona i pH vrednosti padaju ispod 7. Nasuprot tome, supstanca koja se zove baza smanjuje koncentraciju vodoni\u010dnih jona i pH vrednost raste iznad 7. To zna\u010di da je svaki rastvor ispod pH 7 kiseo, a svaki rastvor iznad 7 je alkalni. Po\u0161to koristimo dekadni logaritam, 1 pH manje zna\u010di 10 puta povec\u0301anje aktivnosti H<sup>+<\/sup>. [2]<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d798223 elementor-widget elementor-widget-image\" data-id=\"d798223\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"600\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/what-is-ph-scale.png\" class=\"attachment-full size-full wp-image-207321\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/what-is-ph-scale.png 1200w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/what-is-ph-scale-300x150.png 300w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/what-is-ph-scale-600x300.png 600w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/what-is-ph-scale-768x384.png 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 1: pH skala<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-18f9733 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"18f9733\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-04c18ab\" data-id=\"04c18ab\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-149b2a1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"149b2a1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-abd6037\" data-id=\"abd6037\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8311fa7 elementor-widget elementor-widget-heading\" data-id=\"8311fa7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">2.Kako funkcioni\u0161e pH elektroda?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-0a9f264\" data-id=\"0a9f264\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-268efa9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"268efa9\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_bottom&quot;:&quot;mountains&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 100\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" opacity=\"0.33\" d=\"M473,67.3c-203.9,88.3-263.1-34-320.3,0C66,119.1,0,59.7,0,59.7V0h1000v59.7 c0,0-62.1,26.1-94.9,29.3c-32.8,3.3-62.8-12.3-75.8-22.1C806,49.6,745.3,8.7,694.9,4.7S492.4,59,473,67.3z\"\/>\n\t<path class=\"elementor-shape-fill\" opacity=\"0.66\" d=\"M734,67.3c-45.5,0-77.2-23.2-129.1-39.1c-28.6-8.7-150.3-10.1-254,39.1 s-91.7-34.4-149.2,0C115.7,118.3,0,39.8,0,39.8V0h1000v36.5c0,0-28.2-18.5-92.1-18.5C810.2,18.1,775.7,67.3,734,67.3z\"\/>\n\t<path class=\"elementor-shape-fill\" d=\"M766.1,28.9c-200-57.5-266,65.5-395.1,19.5C242,1.8,242,5.4,184.8,20.6C128,35.8,132.3,44.9,89.9,52.5C28.6,63.7,0,0,0,0 h1000c0,0-9.9,40.9-83.6,48.1S829.6,47,766.1,28.9z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8ee3319\" data-id=\"8ee3319\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-68cfbf8 elementor-widget elementor-widget-text-editor\" data-id=\"68cfbf8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Staklena elektroda ili pH elektroda je vrsta jon-selektivne elektrode &#8211; selektivna je za merenje vodoni\u010dnih jona. Za potenciometrijsko pH merenje potrebni su sledec\u0301i delovi:<\/p>\n<ul>\n<li><strong>referentna elektroda<\/strong>, naj\u010de\u0161c\u0301a je poluc\u0301elija srebrnog hlorida (srebrna \u017eica oblo\u017eena AgCl u kontaktu sa zasic\u0301enim rastvorom KCl) \u2013 ima konstantan potencijal<\/li>\n<li><strong>indikatorska elektroda sa staklom osetljivim na pH<\/strong> \u2013 menja potencijal kao odgovor na koncentraciju analita, <\/li>\n<li><strong>mV metar<\/strong> \u2013 o\u010ditava razliku potencijala izme\u0111u referentne i indikatorske elektrode.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-88ae091 elementor-widget elementor-widget-image\" data-id=\"88ae091\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"600\" height=\"526\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/A-combination-pH-electrode-600x526.png\" class=\"attachment-large size-large wp-image-207152\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/A-combination-pH-electrode-600x526.png 600w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/A-combination-pH-electrode-300x263.png 300w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/A-combination-pH-electrode-768x673.png 768w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/A-combination-pH-electrode-1536x1346.png 1536w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/A-combination-pH-electrode.png 1780w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\"> Slika 2: Kombinovana pH elektroda<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66581d4 elementor-widget elementor-widget-text-editor\" data-id=\"66581d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Obi\u010dno se koristi kombinovana pH elektroda (slika 2), koja uklju\u010duje i referentnu i indikatorsku elektrodu.<\/p>\n<p>Deo elektrode koji je osetljiv na pH je tanki stakleni vrh ili konus na dnu indikatorske elektrode. Na povr\u0161ini ovog osetljivog stakla nalaze se negativno naelektrisani atomi kiseonika (iz SiO<sub>4<\/sub>) koji mogu da vezuju pozitivno naelektrisane jone odgovarajuc\u0301e veli\u010dine \u2013 jone vodonika (kao i alkalne jone, ali manje snage). <\/p>\n<p>Koliko je jona vodonika vezano za povr\u0161inu osetljivog stakla zavisi od aktivnosti (koncentracije) vodonikovih jona u uzorku. Kada se joni vodonika ve\u017eu za staklo osetljivo na pH, stvara se elektri\u010dni potencijal. Stoga, o\u010ditavanjem ovog potencijala pomoc\u0301u mV metra, pH vrednost se mo\u017ee izra\u010dunati pomoc\u0301u Nernstove jedna\u010dine [2]:<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-f1d627c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f1d627c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-ed8bc8d\" data-id=\"ed8bc8d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-65c660f elementor-widget elementor-widget-image\" data-id=\"65c660f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"357\" height=\"47\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/formula-E-1.png\" class=\"attachment-large size-large wp-image-207173\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/formula-E-1.png 357w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/formula-E-1-300x39.png 300w\" sizes=\"(max-width: 357px) 100vw, 357px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-0955050\" data-id=\"0955050\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c82ab43 elementor-widget elementor-widget-text-editor\" data-id=\"c82ab43\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>E = potencijal u mV<\/p>\n<p>E<sup>0<\/sup> = elektri\u010dni potencijal koji proizvodi referentna elektroda<\/p>\n<p>\u03b2 = efekat dehidracije, kontaminacije, ogrebotina itd. na staklenu membranu<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-9261649 elementor-widget elementor-widget-text-editor\" data-id=\"9261649\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Druga klju\u010dna komponenta elektrode je <strong>spoj<\/strong>, koji omoguc\u0301ava kontakt izme\u0111u rastvora u referentnoj elektrodi (elektrolit, zasic\u0301eni KCl) i uzorka. Elektrolit curi iz referentne elektrode u uzorak, zatvarajuc\u0301i elektri\u010dni krug i omoguc\u0301avajuc\u0301i merenja. \u0160to je vec\u0301i protok elektrolita, to je bolji odgovor elektrode. [2] <\/p>\n<p>Standardne <strong>jednospojne elektrode<\/strong> imaju referentnu elektrodu u direktnom kontaktu sa uzorkom (slika 3). Srebrni hlorid prisutan u referentnoj elektrodi mo\u017ee imati nisku rastvorljivost u uzorku, tako da se pri kontaktu sa uzorkom formira precipitat na spolja\u0161njoj strani spoja \u0161to dovodi do pogre\u0161nih o\u010ditavanja. U nepovoljnim uslovima (visok pritisak, visoka temperatura, visoka provodljivost) protok elektrolita se tako\u0111e mo\u017ee obrnuti, \u0161to dovodi do kontaminacije referentne poluc\u0301elije i potpunog otkaza elektrode.<\/p>\n<p><strong>Dvostruko punjene elektrode<\/strong> imaju, kao \u0161to naziv govori, dva spoja (slika 3). Ove elektrode imaju dodatni odeljak za referentnu elektrodu sa unutra\u0161njim spojem. Me\u0111upodru\u010dje je bez srebra i nije osetljivo na kontaminaciju, \u0161to povec\u0301ava vek trajanja elektrode.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e003501 elementor-widget elementor-widget-image\" data-id=\"e003501\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"475\" height=\"318\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/Double-and-single-junction-electrode.png\" class=\"attachment-full size-full wp-image-207200\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/Double-and-single-junction-electrode.png 475w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/Double-and-single-junction-electrode-300x201.png 300w\" sizes=\"(max-width: 475px) 100vw, 475px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 3: Pore\u0111enje elektrode sa dvostrukim spojem i jednostruke elektrode<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f445f88 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f445f88\" data-element_type=\"section\" data-e-type=\"section\" id=\"bluebox\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d95933b\" data-id=\"d95933b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b608f1f elementor-widget elementor-widget-heading\" data-id=\"b608f1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Za\u0161to pH elektrode treba kalibrisati?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ed6a28 elementor-widget elementor-widget-text-editor\" data-id=\"2ed6a28\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>E<sup>0<\/sup> i \u03b2 vrednosti u Nernstovoj jedna\u010dini zavise od stanja staklene membrane (nivo hidratacije, naslage, ogrebotine, itd.) i spoja (nivo za\u010depljenja).<\/p>\n<p>Izra\u010dunavanje ovih vrednosti u praksi bi bilo nemoguc\u0301e, a promene su previ\u0161e zna\u010dajne za rezultate. Nakon kalibracije pH elektrode sa rastvorima poznate vrednosti (po\u017eeljno sa najmanje dva), merenja se prilago\u0111avaju u skladu sa tim.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-68f8e98 elementor-widget elementor-widget-html\" data-id=\"68f8e98\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>#bluebox a {color:#ffff00 !important;}\n        #bluebox a:hover {color:#FF6900 !important;}\n<\/style>\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-6433486 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6433486\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-3a2ce9e\" data-id=\"3a2ce9e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1ca742e elementor-widget elementor-widget-heading\" data-id=\"1ca742e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Za\u0161to treba odr\u017eavati pH elektrode?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-362a8ef elementor-widget elementor-widget-text-editor\" data-id=\"362a8ef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Va\u017eno je razumeti da se joni vodonika mogu vezati za staklenu membranu samo ako je hidratizovana, zbog \u010dega elektrodu treba \u010duvati u <a href=\"https:\/\/www.hannaservice.eu\/storage-solution-for-ph-and-orp-electrodes-25-x-20-ml-hi70300p-product\" target=\"_blank\"><strong>rastvoru za skladi\u0161tenje HI70300<\/strong><\/a> koji odr\u017eava povr\u0161inu elektrode hidratizovanom i spremnom za merenje (Slika 4).<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-fb91c4a\" data-id=\"fb91c4a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e31865a elementor-widget elementor-widget-image\" data-id=\"e31865a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"359\" height=\"431\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi70300.png\" class=\"attachment-full size-full wp-image-207329\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi70300.png 359w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi70300-250x300.png 250w\" sizes=\"(max-width: 359px) 100vw, 359px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 4: \u010cuvanje elektrode u rastvoru za skladi\u0161tenje HI70300<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-76574ed elementor-widget elementor-widget-text-editor\" data-id=\"76574ed\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Joni vodonika se tako\u0111e ne mogu vezati za povr\u0161inu, ako postoje (organske ili neorganske) naslage. Koli\u010dina povr\u0161ine koja je dostupna za vezivanje uti\u010de na kvalitet merenja. <\/p>\n<p>\u010ci\u0161c\u0301enje sa <a href=\"https:\/\/www.hannaservice.eu\/general-purpose-ph-electrode-cleaning-solution-500-ml-hi7061l-product\" target=\"_blank\" rel=\"noopener\"><strong>HI7061 op\u0161te namene ili rastvorom za \u010di\u0161c\u0301enje za specifi\u010dnu primenu<\/strong><\/a> c\u0301e ukloniti naslage i povratiti elektrodu (Slika 5).<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-97d0c34 elementor-widget elementor-widget-image\" data-id=\"97d0c34\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1618\" height=\"605\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi7061-cleaning.png\" class=\"attachment-full size-full wp-image-207336\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi7061-cleaning.png 1618w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi7061-cleaning-300x112.png 300w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi7061-cleaning-600x224.png 600w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi7061-cleaning-768x287.png 768w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-hi7061-cleaning-1536x574.png 1536w\" sizes=\"(max-width: 1618px) 100vw, 1618px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 5: Uklanjanje naslaga na povr\u0161ini stakla osetljivog na pH pomoc\u0301u rastvora za \u010di\u0161c\u0301enje op\u0161te namene HI7061<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e814e62 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e814e62\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-8ce1bc4\" data-id=\"8ce1bc4\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d9d8886 elementor-widget elementor-widget-image\" data-id=\"d9d8886\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"614\" height=\"646\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-levels.png\" class=\"attachment-full size-full wp-image-207343\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-levels.png 614w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-levels-285x300.png 285w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-levels-570x600.png 570w\" sizes=\"(max-width: 614px) 100vw, 614px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 6: Idealan nivo elektrolita.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-358df03\" data-id=\"358df03\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6570b53 elementor-widget elementor-widget-text-editor\" data-id=\"6570b53\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Nivo elektrolita u referentnoj elektrodi treba dr\u017eati na 1-2 cm ispod otvora za punjenje radi odr\u017eavanja odgovarajuc\u0301eg pritiska za odliv elektrolita (slika 6).<\/p>\n<p>Pre merenja, nivoe elektrolita treba proveriti i ponovo napuniti <a href=\"https:\/\/www.hannaservice.eu\/3-5m-kcl-fill-solution-for-double-junction-electrodes-4-x-30ml-hi7082-product\" target=\"_blank\" rel=\"noopener\"><strong>elektrolitom HI7082 za elektrode sa dvostrukim spojem<\/strong><\/a> ili <a href=\"https:\/\/www.hannaservice.eu\/electrolyte-fill-solution-1m-kno-30-ml-x-4-hi7072-product\" target=\"_blank\" rel=\"noopener\"><strong>HI7072 elektrolitom za elektrode sa jednim spojem<\/strong><\/a> ako je potrebno. I tokom merenja, va\u017eno je da je poklopac labav ili otvoren.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-e977bb1 elementor-widget elementor-widget-heading\" data-id=\"e977bb1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Kako proveriti stanje pH elektrode?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ff4594 elementor-widget elementor-widget-text-editor\" data-id=\"8ff4594\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Za proveru elektrode, ako je u dobrom stanju, <strong>treba odrediti pomak i nagib.<\/strong><\/p>\n<p><strong>Ofset<\/strong> je mV vrednost merena u rastvoru sa <strong>pH 7,0<\/strong>. Teoretski, ova vrednost bi trebalo da bude 0 mV, ali je u praksi prihvatljivo odstupanje od <strong>\u00b1<\/strong><strong>30 mV<\/strong>.<\/p>\n<p><strong>Nagib<\/strong> se mo\u017ee odrediti merenjem vrednosti mV u rastvorima sa pH 7,0 i pH 4,0 (ili pH 10,0) i izra\u010dunavanjem apsolutne mV razlike.<\/p>\n<p>Iz <strong>Nernstove jedna\u010dine<\/strong> mo\u017eemo videti da ova razlika treba da bude 59,16 mV * 3 (razlika u pH) = 177,48 mV, ali od <strong>150 mV do 186 mV je prihvatljiv nagib<\/strong>.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-535e44f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"535e44f\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;shape_divider_top&quot;:&quot;mountains&quot;}\">\n\t\t\t\t\t<div class=\"elementor-shape elementor-shape-top\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 100\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" opacity=\"0.33\" d=\"M473,67.3c-203.9,88.3-263.1-34-320.3,0C66,119.1,0,59.7,0,59.7V0h1000v59.7 c0,0-62.1,26.1-94.9,29.3c-32.8,3.3-62.8-12.3-75.8-22.1C806,49.6,745.3,8.7,694.9,4.7S492.4,59,473,67.3z\"\/>\n\t<path class=\"elementor-shape-fill\" opacity=\"0.66\" d=\"M734,67.3c-45.5,0-77.2-23.2-129.1-39.1c-28.6-8.7-150.3-10.1-254,39.1 s-91.7-34.4-149.2,0C115.7,118.3,0,39.8,0,39.8V0h1000v36.5c0,0-28.2-18.5-92.1-18.5C810.2,18.1,775.7,67.3,734,67.3z\"\/>\n\t<path class=\"elementor-shape-fill\" d=\"M766.1,28.9c-200-57.5-266,65.5-395.1,19.5C242,1.8,242,5.4,184.8,20.6C128,35.8,132.3,44.9,89.9,52.5C28.6,63.7,0,0,0,0 h1000c0,0-9.9,40.9-83.6,48.1S829.6,47,766.1,28.9z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a365d26\" data-id=\"a365d26\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1a15da7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1a15da7\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c732100\" data-id=\"c732100\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e59e4a7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e59e4a7\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-d717c1e\" data-id=\"d717c1e\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-13f6744 elementor-widget elementor-widget-heading\" data-id=\"13f6744\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">3. pH merenja slo\u017eenih uzoraka<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-f335c26\" data-id=\"f335c26\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8f12dc5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8f12dc5\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5fc49af\" data-id=\"5fc49af\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9b98529 elementor-widget elementor-widget-text-editor\" data-id=\"9b98529\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Kada merimo pH staklenom elektrodom, mo\u017eemo se suo\u010diti sa odre\u0111enim pote\u0161koc\u0301ama. Prvo, moramo se uveriti da je elektroda pravilno odr\u017eavana (o\u010di\u0161c\u0301ena, hidratizovana, ponovo napunjena) i kalibrisana sve\u017eim puferima. Ako problemi i dalje postoje, <strong>dizajn elektrode nije pogodan za merenje pH u na\u0161em uzorku.<\/strong> Neki od naj\u010de\u0161c\u0301ih problema su:<\/p>\n<ul>\n<li>kada nema dovoljno protoka elektrolita zbog hemijskih\/fizi\u010dkih svojstava uzorka ili za\u010depljenja spoja,<\/li>\n<li>kada je uzorak polu\u010dvrst ili \u010dvrst,<\/li>\n<li>kada postoji zna\u010dajna koncentracija natrijuma ili drugih alkalnih jona,<\/li>\n<li>ako imamo posla sa uzorkom sa HF,<\/li>\n<li>ako merimo uzorkiva\u010de sa visokim\/niskim temperaturama ili<\/li>\n<li>kada postoji buka iz okoline.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1857ac elementor-widget elementor-widget-heading\" data-id=\"f1857ac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Hanna Instruments nudi re\u0161enja za sve ove probleme sa posebnim spojevima, vrhovima, tipom stakla i dizajnom tela.<\/h3>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-133f2e6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"133f2e6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f009c29\" data-id=\"f009c29\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-c16d5e7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c16d5e7\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-4f574d3\" data-id=\"4f574d3\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a270905 elementor-widget elementor-widget-heading\" data-id=\"a270905\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-medium\">3.1. Nizak protok elektrolita<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-499bf3c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"499bf3c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6ae5b9b\" data-id=\"6ae5b9b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-72f1bc2 elementor-widget elementor-widget-text-editor\" data-id=\"72f1bc2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Primeri: <\/strong><\/p>\n<ul>\n<li><strong>uzorci niske provodljivosti<\/strong> (npr. voda za pic\u0301e, uzorci sa manje od 100 \u03bcS\/cm)<\/li>\n<li><strong>uzorci visoke provodljivosti<\/strong> (npr. slani rastvori, morska voda, jake kiseline, jake baze)<\/li>\n<li><strong>viskozni uzorci<\/strong> (npr. boje, kozmetika, paste, emulzije)<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-510316e elementor-widget elementor-widget-text-editor\" data-id=\"510316e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Dovoljan protok elektrolita iz referentne elektrode u uzorak kroz spoj je klju\u010dan za dobijanje stabilnih o\u010ditavanja<\/p>\n<p>U slu\u010dajevima kada se referentni elektrolit i uzorak zna\u010dajno razlikuju po sastavu, ovaj protok je ograni\u010den i fenomen koji se zove <em>spojni potencijal<\/em> ima zna\u010dajan uticaj na merenja.<\/p>\n<p>Standardne elektrode imaju jedan kerami\u010dki spoj koji ne obezbe\u0111uje dovoljan protok elektrolita kada se meri pH uzoraka niske provodljivosti, uzoraka visoke provodljivosti ili viskoznih uzoraka. Kori\u0161c\u0301enjem elektroda sa vi\u0161e kerami\u010dkih spojeva, brzina protoka se povec\u0301ava i o\u010ditavanja se stabilizuju.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-68b7151 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"68b7151\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-d5e68ed\" data-id=\"d5e68ed\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cf7f136 elementor-widget elementor-widget-text-editor\" data-id=\"cf7f136\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.hannaservice.eu\/digital-ph-electrode-for-semi-solids-and-emulsions-hi10530-product\" target=\"_blank\" rel=\"noopener\" data-wplink-edit=\"true\"><strong>Hanna Instruments HI10530 pH elektroda sa dvostrukim spojem sa trostrukim kerami\u010dkim spojem na spolja\u0161njem spoju<\/strong><\/a> (Slika 7) dizajnirana je za pouzdana merenja pH vrednosti u uzorcima niske provodljivosti i viskoznosti, sa brzinom protoka elektrolita od 40 do 50 \u00b5L\/sat (u pore\u0111enju sa 20 \u00b5L\/sat za standardnu elektrodu).<\/p>\n<p>\u0160tavi\u0161e, niskotemperaturno staklo sa ni\u017eom impedansom pobolj\u0161ava kvalitet pH merenja u takvim uzorcima.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-bd0715b\" data-id=\"bd0715b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8701bbe elementor-widget elementor-widget-image\" data-id=\"8701bbe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hannaservice.eu\/digital-ph-electrode-for-semi-solids-and-emulsions-hi10530-product\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"263\" height=\"340\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1053.png\" class=\"attachment-full size-full wp-image-207353\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1053.png 263w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1053-232x300.png 232w\" sizes=\"(max-width: 263px) 100vw, 263px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 7: Hanna Instruments HI1053 elektroda<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-ef9c92a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ef9c92a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-e848055\" data-id=\"e848055\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-24418e4 elementor-widget elementor-widget-text-editor\" data-id=\"24418e4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.hannaservice.eu\/ph-electrode-for-hydrocarbons-and-solvents-digital-ph-electrode-hi10430-product\" target=\"_blank\" rel=\"noopener\" data-wplink-edit=\"true\"><strong>Hanna Instruments HI10430 pH elektroda sa dvostrukim spojem sa dvostrukim kerami\u010dkim spojem<\/strong><\/a> (Slika 8) je idealna za aplikacije koje uklju\u010duju uzorke visoke provodljivosti ili koncentrovane uzorke, koji imaju brzinu protoka elektrolita od 30 do 40 \u00b5L\/sat.<\/p>\n<p>Sistem dvostrukog spoja tako\u0111e \u0161titi referentnu elektrodu od kontaminacije.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-f9fc926\" data-id=\"f9fc926\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-92ba769 elementor-widget elementor-widget-image\" data-id=\"92ba769\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hannaservice.eu\/ph-electrode-for-hydrocarbons-and-solvents-digital-ph-electrode-hi10430-product\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"311\" height=\"369\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1043.png\" class=\"attachment-full size-full wp-image-207360\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1043.png 311w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1043-253x300.png 253w\" sizes=\"(max-width: 311px) 100vw, 311px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 8: Hanna Instruments HI1043 elektroda<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-75d2546 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"75d2546\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c9e275e\" data-id=\"c9e275e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-400379f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"400379f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-07ca491\" data-id=\"07ca491\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a1775dc elementor-widget elementor-widget-heading\" data-id=\"a1775dc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-medium\">3.2. Za\u010depljen spoj<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5461046 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5461046\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7bad49d\" data-id=\"7bad49d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-65b00e9 elementor-widget elementor-widget-text-editor\" data-id=\"65b00e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Primeri: <\/strong><\/p>\n<ul>\n<li><strong>\u201eprljavi\u201c uzorci<\/strong> sa visokim sadr\u017eajem \u010dvrstih materija (npr. vino, sok, ka\u0161a, sladovina)<\/li>\n<li><strong>masti<\/strong><\/li>\n<li><strong>sadr\u017eaj proteina<\/strong> (npr. mleko, meso, sir i drugi uzorci hrane)<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e6a472 elementor-widget elementor-widget-text-editor\" data-id=\"8e6a472\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Kao \u0161to je prethodno diskutovano, curenje elektrolita sa referentne elektrode u uzorke zatvara elektri\u010dno kolo i omoguc\u0301ava merenja. Svako za\u010depljenje spoja c\u0301e dovesti do nepravilnih i nestabilnih o\u010ditavanja.<\/p>\n<p>\u201ePrljavi\u201c uzorci koji imaju visok sadr\u017eaj \u010dvrstih materija, masti, proteina itd. mogu brzo za\u010depiti konvencionalne kerami\u010dke spojeve i u\u010diniti elektrodu neupotrebljivom.<\/p>\n<p>Odabirom elektrode sa posebnim dizajnom spoja koji je otporan na za\u010depljenje (npr., sistem za prevenciju za\u010depljenja, platneni spoj ili otvoreni spoj) produ\u017eava se vek trajanja elektrode.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-2527f19 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2527f19\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-22f21b1\" data-id=\"22f21b1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6a5284d elementor-widget elementor-widget-text-editor\" data-id=\"6a5284d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.hannaservice.eu\/digital-glass-body-ph-electrode-with-clogging-prevention-system-cpstm-hi10480-product\" target=\"_blank\" rel=\"noopener\"><strong>Hanna Instruments HI1048 pH elektroda ima tehnologiju sistema za spre\u010davanje za\u010depljenja (CPS)<\/strong><\/a> (Slika 9) je dizajnirana za pH analizu vina, mo\u0161ta i sokova.<\/p>\n<p>CPS tehnologija koristi poroznost bru\u0161enog stakla u kombinaciji sa PTFE navlakom da spre\u010di za\u010depljenje spoja.<\/p>\n<p>Bru\u0161eno staklo omoguc\u0301ava pravilan protok te\u010dnosti, dok PTFE navlaka odbija \u010dvrste materije.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-484d5e0\" data-id=\"484d5e0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dfb799f elementor-widget elementor-widget-image\" data-id=\"dfb799f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hannaservice.eu\/digital-glass-body-ph-electrode-with-clogging-prevention-system-cpstm-hi10480-product\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"177\" height=\"136\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-HI1048.jpg\" class=\"attachment-full size-full wp-image-207367\" alt=\"\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 9: Hanna Instruments HI1048 elektroda<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-cbc584b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cbc584b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-bb072f5\" data-id=\"bb072f5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3d1dac9 elementor-widget elementor-widget-image\" data-id=\"3d1dac9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hannaservice.eu\/wireless-beer-ph-meter-halor-fc2142-product\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"147\" height=\"157\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/electrode-FC214-e1684431744846.jpg\" class=\"attachment-full size-full wp-image-207374\" alt=\"\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 10: Hanna Instruments FC214 elektroda<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-503643a\" data-id=\"503643a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-60ef001 elementor-widget elementor-widget-text-editor\" data-id=\"60ef001\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Jo\u0161 jedan dizajn spoja koji je pogodan za merenje pH vrednosti uzoraka sa visokim sadr\u017eajem zemlji\u0161ta je <strong>spoj koji se mo\u017ee uvla\u010diti.<\/strong><\/p>\n<p>U ovom slu\u010daju spoj se mo\u017ee o\u010distiti jednostavnim izvla\u010denjem pribli\u017eno 3 mm spoja.<\/p>\n<p><a href=\"https:\/\/www.hannaservice.eu\/wireless-beer-ph-meter-halor-fc2142-product\" target=\"_blank\" rel=\"noopener\"><strong>Hanna Instruments FC214 pH elektroda<\/strong><\/a> (Slika 10) ima spoj tkanine i idealna je za analizu ka\u0161e i sladovine u procesu pravljenja piva.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-e101f52 elementor-widget elementor-widget-text-editor\" data-id=\"e101f52\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>pH elektrode Hanna Instruments Foodcare serije imaju dizajn otvorenog spoja.<\/strong><\/p>\n<p>U ovom tipu spoja, gde je \u010dvrsti gel interfejs (viskolen) izme\u0111u uzorka i unutra\u0161nje Ag\/AgCl reference.<\/p>\n<p>Ovaj interfejs ga \u010dini nepropusnim za za\u010depljenje, \u0161to rezultira brzim odzivom i stabilnim o\u010ditanjima.<\/p>\n<p>Pored toga, ova vrsta spoja spre\u010dava kontaminaciju uzoraka \u0161to je klju\u010dno prilikom testiranja hrane.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-871a76c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"871a76c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b18fbc6\" data-id=\"b18fbc6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-d2742dc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d2742dc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-b3af1da\" data-id=\"b3af1da\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0db408d elementor-widget elementor-widget-heading\" data-id=\"0db408d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-medium\">3.3. \u010cvrsti i polu\u010dvrsti uzorci<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e8d36bc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e8d36bc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4fc5834\" data-id=\"4fc5834\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-19b6357 elementor-widget elementor-widget-text-editor\" data-id=\"19b6357\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Primeri: <\/strong><\/p>\n<ul>\n<li><strong>polu\u010dvrsti uzorci<\/strong> (npr. jogurt, sir, meso, kreme, uzorci zemlje)<\/li>\n<li><strong>\u010dvrsti uzorci<\/strong> (npr. ko\u017ea, ko\u017ea, agar plo\u010de, papir)<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fb15a95 elementor-widget elementor-widget-text-editor\" data-id=\"fb15a95\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Konvencionalne pH elektrode sfernog oblika su dizajnirane za vodene uzorke jer pru\u017eaju veliku povr\u0161inu za interakciju sa uzorkom.<\/p>\n<p>Sa ovim tipom oblika vrha, me\u0111utim, te\u0161ko je prodreti u polu\u010dvrste uzorke ili uspostaviti kontakt sa \u010dvrstim uzorcima. Elektrode sa konusnim ili ravnim vrhovima omoguc\u0301avaju direktno merenje.<\/p>\n<p>Testiranje polu\u010dvrstih uzoraka je olak\u0161ano sa elektrodama konusnog oblika Ovaj tip dizajna vrha omoguc\u0301ava prodiranje i direktno merenje pH vrednosti u uzorcima kao \u0161to su jogurt, sir, meso, kreme, zemlja itd.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3ff91e elementor-widget elementor-widget-heading\" data-id=\"d3ff91e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Hanna Instruments nudi veliki izbor konusnih elektroda dizajniranih za specifi\u010dne uzorke (Slika 11).<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-2cdfa02 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2cdfa02\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-20 elementor-inner-column elementor-element elementor-element-fe47b49\" data-id=\"fe47b49\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e7d2b07 elementor-widget elementor-widget-image\" data-id=\"e7d2b07\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/elementor\/thumbs\/hanna-electrodes-food-q6nngethxezbdqbrtsa6icummqpy6i3o7kxn647594.png\" title=\"hanna-electrodes-food\" alt=\"hanna-electrodes-food\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Hrana uop\u0161te<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-20 elementor-inner-column elementor-element elementor-element-9e77d8e\" data-id=\"9e77d8e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-917c63a elementor-widget elementor-widget-image\" data-id=\"917c63a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"260\" height=\"344\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hanna-electrodes-yoghurt.png\" class=\"attachment-full size-full wp-image-207395\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hanna-electrodes-yoghurt.png 260w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hanna-electrodes-yoghurt-227x300.png 227w\" sizes=\"(max-width: 260px) 100vw, 260px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Jogurt <\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-20 elementor-inner-column elementor-element elementor-element-a006ae5\" data-id=\"a006ae5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-36f5949 elementor-widget elementor-widget-image\" data-id=\"36f5949\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/elementor\/thumbs\/hanna-electrodes-soil-cream-q6nnms64qj7mj5eenoamuc6fu5mhazvzqfr1x0bzz6.png\" title=\"hanna-electrodes-soil-cream\" alt=\"hanna-electrodes-soil-cream\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Zemlja, kreme<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-20 elementor-inner-column elementor-element elementor-element-7bb4346\" data-id=\"7bb4346\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5140974 elementor-widget elementor-widget-image\" data-id=\"5140974\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"238\" height=\"257\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hanna-electrodes-cheese.png\" class=\"attachment-full size-full wp-image-207409\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Sir<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-20 elementor-inner-column elementor-element elementor-element-74622cc\" data-id=\"74622cc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0473261 elementor-widget elementor-widget-image\" data-id=\"0473261\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"259\" height=\"386\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hanna-electrodes-meat.png\" class=\"attachment-large size-large wp-image-207416\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hanna-electrodes-meat.png 259w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hanna-electrodes-meat-201x300.png 201w\" sizes=\"(max-width: 259px) 100vw, 259px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Meso<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc7f65e elementor-widget elementor-widget-text-editor\" data-id=\"dc7f65e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Slika 11: Hanna Instruments elektrode<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-dd20707 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dd20707\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-9bc36f7\" data-id=\"9bc36f7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ca16bd1 elementor-widget elementor-widget-text-editor\" data-id=\"ca16bd1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>U slu\u010daju \u010dvrstih uzoraka, kada prodiranje u uzorak nije moguc\u0301e, povr\u0161inski kontakt treba optimizovati kori\u0161c\u0301enjem elektrode ravnog oblika.<\/p>\n<p><a href=\"https:\/\/www.hannaservice.eu\/digital-flat-tip-ph-electrode-for-food-surfaces-hi14140-product\" target=\"_blank\" rel=\"noopener\"><strong>Hanna Instruments HI1414 elektroda sa ravnim vrhom<\/strong><\/a> (Slika 12) je dizajnirana za povr\u0161inska merenja pH na ko\u017ei, ko\u017ei, agar plo\u010dama, papiru itd.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-8e5127b\" data-id=\"8e5127b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9e3a69b elementor-widget elementor-widget-image\" data-id=\"9e3a69b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hannaservice.eu\/digital-flat-tip-ph-electrode-for-food-surfaces-hi14140-product\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"247\" height=\"331\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1414.png\" class=\"attachment-full size-full wp-image-207423\" alt=\"\" srcset=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1414.png 247w, https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1414-224x300.png 224w\" sizes=\"(max-width: 247px) 100vw, 247px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 12: Hanna Instruments HI1414 elektrode<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6965a4e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6965a4e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-594740a\" data-id=\"594740a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-3ada921 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3ada921\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-48be445\" data-id=\"48be445\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-46e8f66 elementor-widget elementor-widget-heading\" data-id=\"46e8f66\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-medium\">3.4. Uzorci visokog pH<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-161d763 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"161d763\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9b572d8\" data-id=\"9b572d8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1ac2052 elementor-widget elementor-widget-text-editor\" data-id=\"1ac2052\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Primeri: <\/strong><\/p>\n<ul>\n<li>uzorci sa <strong>pH vi\u0161im od 12<\/strong> (npr. deterd\u017eenti, voda sa sapunom, sredstva za \u010di\u0161c\u0301enje u domac\u0301instvu, jake baze)<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c20f0a8 elementor-widget elementor-widget-text-editor\" data-id=\"c20f0a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Staklo osetljivo na pH<\/strong> nije striktno selektivno za jone vodonika.<\/p>\n<p><strong>Alkalni joni<\/strong>, posebno joni natrijuma, tako\u0111e mogu da se vezuju za povr\u0161inu stakla, ali sa manjom \u010dvrstoc\u0301om i u vec\u0301ini slu\u010dajeva nemaju zna\u010dajan uticaj na pH merenja.<\/p>\n<p>U uzorcima sa <strong>visokim pH<\/strong>, koncentracija <strong>vodonikovih jona<\/strong> je veoma mala u pore\u0111enju sa koncentracijom alkalnih jona i koli\u010dina <strong>alkalnih jona<\/strong> na povr\u0161ini stakla \u010dini zna\u010dajne promene u potencijalu o\u010ditavanja.<\/p>\n<p>Stoga je <strong>prikazana pH<\/strong> vrednost <strong>ni\u017ea<\/strong> nego \u0161to je u stvari. Razlika izme\u0111u teorijske i izmerene vrednosti naziva se <strong>alkalna gre\u0161ka.<\/strong><\/p>\n<p><strong>Hanna Instruments visokotemperaturno staklo minimizira alkalnu gre\u0161ku<\/strong> u visoko alkalnim rastvorima.<\/p>\n<p>Pri pH 13 u rastvoru sa koncentracijom natrijuma 1,0M alkalna gre\u0161ka za staklo visoke temperature je 0,15 pH, u pore\u0111enju sa 0,43 pH za staklo op\u0161te namene i preko 0,79 pH za staklo niske temperature.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7888aa1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7888aa1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d4f3ffd\" data-id=\"d4f3ffd\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-ec812c8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ec812c8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-33989a1\" data-id=\"33989a1\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-37efb5d elementor-widget elementor-widget-heading\" data-id=\"37efb5d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-medium\">3.5. Uzorci sa fluorovodoni\u010dnom kiselinom<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8411261 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8411261\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9293f5e\" data-id=\"9293f5e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8c7f1f3 elementor-widget elementor-widget-text-editor\" data-id=\"8c7f1f3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Primeri: <\/strong><\/p>\n<ul>\n<li><strong>laboratorijski reagensi<\/strong> i analiti\u010dki standardi koji sadr\u017ee <strong>fluor<\/strong><\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1f945c0 elementor-widget elementor-widget-text-editor\" data-id=\"1f945c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Fluorovodoni\u010dna kiselina mo\u017ee brzo da rastvori staklo. Elektroda Hanna Instruments <a href=\"https:\/\/www.hannaservice.eu\/flat-tip-ph-electrode-for-skin-and-surfaces-hi14143-product\" target=\"_blank\" rel=\"noopener\"><strong>HI1143 koristi staklo otporno na HF<\/strong><\/a> za agresivne aplikacije koje uklju\u010duju jone fluora (do 2 g\/L).<\/p>\n<p>Elektrode proizvedene sa ovim staklom traju deset puta du\u017ee od elektroda napravljenih od standardnih pH staklenih formulacija (od 10 do 100 dana). Pored toga, dizajn sa dvostrukim spojem \u0161titi kontaminaciju referentne elektrode.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-354964a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"354964a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-065a08f\" data-id=\"065a08f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-a4076b2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a4076b2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-1077c36\" data-id=\"1077c36\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d8d5b8d elementor-widget elementor-widget-heading\" data-id=\"d8d5b8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-medium\">3.6. Uzorci visoke\/niske temperature<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-50f81bd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"50f81bd\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9fc4cf5\" data-id=\"9fc4cf5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9d39d4a elementor-widget elementor-widget-text-editor\" data-id=\"9d39d4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Primeri: <\/strong><\/p>\n<ul>\n<li><strong>ohla\u0111ena hrana<\/strong><\/li>\n<li><strong>pasterizacija<\/strong><\/li>\n<li><strong>kuvana sladovina<\/strong><\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d0746f elementor-widget elementor-widget-text-editor\" data-id=\"7d0746f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Na niskim temperaturama, elektrode sa staklom visoke impedanse, dac\u0301e na niskim temperaturama veoma bu\u010dne i nestalne signale. <strong>Hanna Instruments elektrode sa staklom za NISKE temperature<\/strong> imaju nisku impedanciju i omoguc\u0301avaju stabilna merenja na ni\u017eim temperaturama.<\/p>\n<p>Na povi\u0161enim temperaturama, me\u0111utim, staklo se mo\u017ee lako rastvoriti, skrac\u0301ujuc\u0301i \u017eivotni vek i performanse elektrode. <strong>Elektrode Hanna Instruments sa<\/strong> <strong>staklom za VISOKE temperature<\/strong> dizajnirane su za produ\u017eenu upotrebu na povi\u0161enim temperaturama. Sa otpornijim staklom, merenja na povi\u0161enim temperaturama su ta\u010dna sa odli\u010dnim vremenom odziva.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-357b04e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"357b04e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-92fb4d3\" data-id=\"92fb4d3\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-f9ffd2b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f9ffd2b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-89eaffc\" data-id=\"89eaffc\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a78e83a elementor-widget elementor-widget-heading\" data-id=\"a78e83a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-medium\">3.7. Uzorci sa elektri\u010dnim strujama<\/p>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-79d4a7a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"79d4a7a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d476f94\" data-id=\"d476f94\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a919c20 elementor-widget elementor-widget-text-editor\" data-id=\"a919c20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Primeri: <\/strong><\/p>\n<ul>\n<li><strong>bazeni za galvanizaciju <\/strong><\/li>\n<li><strong>rashladnji tornjevi <\/strong><\/li>\n<li><strong>kotlovi <\/strong><\/li>\n<li><strong>bazeni za plivanje<\/strong><\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6635823 elementor-widget elementor-widget-text-editor\" data-id=\"6635823\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Elektri\u010dne struje<\/strong> u uzorku <strong>mogu uticati<\/strong> na referentni napon poluc\u0301elije koji je povezan preko te\u010dnog spoja sa uzorkom. U ovom slu\u010daju, referentna elektroda preuzima elektromagnetna polja i <strong>merenje<\/strong> pH <strong>se menja.<\/strong><\/p>\n<p><strong>Podudarni pin<\/strong> je tehnika diferencijalnog merenja koja se koristi da <strong>elimini\u0161e petlje uzemljenja<\/strong> i <strong>perturbacije<\/strong> zajedni\u010dkog moda za merni sistem, \u010dime se izoluju struja\/magnetna polja od referentne elektrode. Hanna proizvodi brojne modele sa odgovarajuc\u0301im dizajnom igle za <strong>bezbedna precizna pH<\/strong> merenja.<\/p>\n<p>Ovaj problem se tako\u0111e mo\u017ee re\u0161iti upotrebom <a href=\"https:\/\/www.hannaservice.eu\/titanium-body-ph-electrode-for-wastewater-with-quick-connect-din-connector-hi12963-product\" target=\"_blank\" rel=\"noopener\"><strong>titanijumskih elektroda<\/strong><\/a> (Slika 13). Titanijumski kavez deluje kao Faradejev kavez i \u0161titi unutra\u0161nji deo elektrode od spolja\u0161nje buke.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a5206db elementor-widget elementor-widget-image\" data-id=\"a5206db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.hannaservice.eu\/titanium-body-ph-electrode-for-wastewater-with-quick-connect-din-connector-hi12963-product\" target=\"_blank\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"524\" height=\"71\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2023\/05\/hi1296-e1684434795161.jpg\" class=\"attachment-full size-full wp-image-207430\" alt=\"\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Slika 13: Hanna Instruments HI1296 elektrode<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2570f22 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2570f22\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-145cc8c\" data-id=\"145cc8c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2635a02 elementor-widget elementor-widget-text-editor\" data-id=\"2635a02\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 style=\"text-align: center;\"><strong>Niste sigurni koja bi elektroda bila najbolja za va\u0161 uzorak?<\/strong><\/h3>\n<p style=\"text-align: center;\">Kontaktirajte Hanna tehni\u010dkog stru\u010dnjaka na <a class=\"keychainify-checked\" href=\"mailto:info@hannaservice.eu\"><strong>info@hannainstruments.rs<\/strong><\/a> ili koristec\u0301i na\u0161 <strong><a href=\"https:\/\/www.hannaservice.eu\/contact-us\" target=\"_blank\" rel=\"noopener\">kontakt obrazac.<\/a><\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-947041e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"947041e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4e5fbe2\" data-id=\"4e5fbe2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e2343e7 elementor-widget elementor-widget-text-editor\" data-id=\"e2343e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>REFERENCE:<\/strong><\/p>\n<ol>\n<li>Jensen, William B. (2004). &#8222;The Symbol for pH&#8220; (PDF). Journal of Chemical Education.<\/li>\n<li>Harris C. Daniel (2010). Quantitative Chemical Analysis, 8th Edition. H. Freeman and Company, New York<\/li>\n<\/ol>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-994a7e6 elementor-widget elementor-widget-spacer\" data-id=\"994a7e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5af0c9b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5af0c9b\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-9546919\" data-id=\"9546919\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f855640 elementor-widget elementor-widget-image\" data-id=\"f855640\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"252\" height=\"74\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2022\/08\/Logo-Hanna-Inst.jpg\" class=\"attachment-large size-large wp-image-177344\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ba1b93c elementor-widget elementor-widget-text-editor\" data-id=\"ba1b93c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>With Great Product<br \/>Come Great Results<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-6e01b03\" data-id=\"6e01b03\" data-element_type=\"column\" data-e-type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-285e71f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"285e71f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-e126034\" data-id=\"e126034\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7d93c36 elementor-widget elementor-widget-heading\" data-id=\"7d93c36\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Usluga <\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-b4051a5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b4051a5\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-ead5684\" data-id=\"ead5684\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-026de0b elementor-widget elementor-widget-heading\" data-id=\"026de0b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Obuka<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-e3a8c01 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e3a8c01\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-dd95147\" data-id=\"dd95147\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a2d781e elementor-widget elementor-widget-heading\" data-id=\"a2d781e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Popravka<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-8fc8b71 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8fc8b71\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-6d347c8\" data-id=\"6d347c8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-647bbb0 elementor-widget elementor-widget-heading\" data-id=\"647bbb0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Odr\u017eavanje<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>UZORCI MOGU BITI SLO\u017dENI, ALI MERENJE MO\u017dE BITI LAKO. pH vrednost je klju\u010dni parametar za [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":207446,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[377],"tags":[],"class_list":["post-207821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-laboratorija"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Izaberite pravu elektrodu za svoje uzorke - Hanna Instruments Srbja<\/title>\n<meta name=\"description\" content=\"pH je klju\u010dni parametar u prehrambenoj industriji, sa pravom elektrodom mo\u017eete dobiti stabilne vrednosti i sa slo\u017eenim uzorcima, proverite na\u0161e!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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