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Measurement of pH in pool water is one of the most important parameters.
The importance of keeping pH levels in line between 7.2 and 7.6 is connected to general health guidelines but also effectiveness of sanitizers.
>7.6 decrease in chlorine effectiveness
<7.2 skin and eye irritation
<7.2 skin and eye irritation
Since the form of chlorine present is pH-dependent, the pH should be balanced at an appropriate level to maximize sanitizer effectiveness and ensure swimmer comfort.
In addition to pH, the concentration of the sanitizer present should also be measured.
Chlorine concentration can be measured as:
– free chlorine
/chlorine available for active disinfection/
– total chlorine
/combined chlorine that is no longer available for disinfection, in addition to free chlorine/
pH value is easy to measure with pH meter or pH tester.
To save time&money Hanna offers a complete line of multiparameter meters that can increase effectiveness and quality of your satitization.
HI981954
Pool Line Multiparameter Waterproof Portable
pH/ORP/EC/Temperature meter
pH/ORP/EC/Temperature meter
HI981954 Pool Line Multiparameter Waterproof Portable Temperature meter is a single tool that allows swimming pool, hot tub, and spa service technicians to measure key water quality parameters for both traditional and electrolytic saltwater pools.
The auto-ranging conductivity/TDS readings can be used for low range readings to track the increase in chemicals as water evaporates from a pool and for the higher range measurement of salt required for the proper electrolysis of sodium chloride to produce chlorine.
The HI981954 can be used for both routine measurements and for process calibration in which the measurement information is then used to update the calibration of process pH, ORP and conductivity meters.
HI981954 offers many advanced features from a large dot matrix LCD that provides for an intuitive user interface in the operation of the meter, log on demand for storing readings, USB port for transferring data, and GLP data for tracking calibration data.
The HI981954 has 5 sensors:
- pH
- ORP
- EC
- Temperature
- barometric pressure
The meter is programmed to recalculate in additional 6 interpretative measurements (pH in mV, absolute conductivity, TDS, resistivity, salinity, seawater sigma).
The HI981954 can display up to 11 parameters simultaneously on the large dot matrix LCD.
HI981914
Pool Line Professional Waterproof
Portable pH/ORP/ISE Meter
Portable pH/ORP/ISE Meter
HI981914 Pool Line Professional Waterproof Portable pH/ORP meter is made for measuring pH and ORP of a swimming pool, hot tub, or spa water. This is an advanced meter with many features including Hanna’s exclusive CAL Check pH electrode diagnostics that is used to identify potential problems including when to clean the electrode, check a buffer for contamination and the overall health of a pH electrode. This function can be used to identify issues with process probes that have a BNC connector.
- Ergonomic, rugged, waterproof (IP67) design
- pH CAL Check™
- Alerts user to potential problems during calibration including when to clean electrode and possible buffer contamination.
- Displays overall probe condition based on offset and slope after calibration
- Five point pH calibration with seven standard buffers and five custom buffers
- Five point ISE calibration with seven preprogrammed standard in choice of concentration
- ISE direct concentration readout in a choice of concentration units
- Automatic Temperature Compensation
- Log-on-demand
The HI981914 can be used for process calibration as well in which the measurement is made with a calibrated pH probe or a measurement by an ORP probe and the value entered into a process controller to match the measured values.
Spot checking can be performed with variety of testers
Calibration
While there are different types of pH electrodes, and many types of meters, the general calibration steps remain the same.
- Keep your pH electrode clean
- Use fresh buffers for your calibration
- Select buffers that bracket your calibration range.
Generally most commonly used are 4,01/7,01/10,01
HI779
Pool Line pH Checker® Handheld Colorimeter (HC)
The HI779 Checker HC is a simple, accurate, and cost effective way to measure pH in swimming pools, hot tubs, and spas. Designed as a more accurate alternative to chemical test kits, this handheld colorimeter provides quick, accurate pH testing results.
Handheld Colorimeter
- Easier to use and more accurate than chemical test kits
- Dedicated to a single parameter
- Small size, big convenience
Author:
Nives Vinceković Budor
mag.ing.chem.ing.
Nives Vinceković Budor
mag.ing.chem.ing.
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