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An advanced portable photometer for the measurement of pH, free chlorine, and total chlorine in water. 

Offers a superior optical system that utilizes a reference detector and narrow band interference filters for extremely fast and repeatable measurements, offering superior performance in accuracy, repeatability, and the short amount of time it takes to perform a measurement.

Compact and waterproof, this meter is extremely user friendly with a tutorial mode that walks the user graphically, step by step, in performing a measurement.

The use of a backlit dot matrix LED allows the use of virtual keys which makes the operation of the meter very intuitive including selecting different methods, reviewing GLP data, recalling the last 50 measurements, and customizing the meter to user preferences

HI97710C: pH, Free and Total Chlorine Portable Photometer with Case

SKU: HI 97710C
  • Free chlorine can exist in two forms and which form is present is based on the pH. At pH less than 7.6 the predominate form is hypochlorous acid (HOCl) while at pH greater than 7.6 the hypochlorite (OCl-) form becomes predominate.  This is very important when it comes to preventing biological growth in water or keeping a swimming pool safe since hypochlorous acid is 100 times more effective as a sanitizer. Total chlorine represents both the free chlorine and combined chlorine present. Combined chlorine is the chlorine bound to nitrogen substances such as ammonia. In swimming pools combined chlorine that we can smell and is irritating to the eyes. The free chlorine measurement is subtracted from the total chlorine measurement in order to know how much combined chlorine is present. HI97710 is designed to measure pH and low levels of free and total chlorine in water up to 5.00 mg/L (ppm).

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