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HI3887 Swimming Pool pH and Residual Chlorine Measurement Kit

Producer: HANNA Instruments

SKU: HANNA-HI3887 Category: Hanna experimental measuring equipment

The HI3887 is a quick test kit for measuring free chlorine and pH. Free chlorine is measured using the DPD method; pH is measured using a visual pH indicator.

Reagents required to perform approximately 50 free chlorine measurements and 100 times measured pH

Easy to use

Chlorine is one of the most commonly used disinfectants for drinking water, wastewater, and water used for swimming pools and spas. It can be added in various forms including calcium hypochlorite, sodium hypochlorite, or in some cases, chlorine gas. When added to water, chlorine produces hypochlorous acid (HOCl) which dissociates into hypochlorite ions (OCl-).

HOCl ↔ H + + OCl-
hypochlorous acid hydrogen ion + hypochlorite ion

HOCl is a form of chlorine that acts as a more powerful disinfectant than OCl-. To ensure that the added chlorine is effective in sanitizing, the pH of the water must be taken into account. Around pH 7.5, HOCl and OCl- are present in roughly equal amounts. Below pH 7.5, the equilibrium shifts in favor of HOCl; above pH 7.5, the equilibrium shifts in favor of OCl-. Depending on the application, chlorine addition is effective when added to water with a neutral or slightly acidic pH.

When chlorine is first added to water, it is available as free chlorine. The measurement of free chlorine represents the amount available for disinfection. Once the chlorine begins to disinfect bacteria and pathogens in the water, it becomes combined chlorine; combined chlorine is no longer available to act as a disinfectant.

The scale	6.0 to 8.5 pH
Resolution	0.5 pH
Method	pH indicator
Number of measurements	100
How to measure	Color comparison

Residual chlorine

The scale	0.0 to 2.5 mg/L (ppm)
Resolution	0.5 mg/L
Method	DPD
Number of measurements	50
How to measure	Color comparison

General specifications

Supply includes	Reagents for 100 pH measurements and 50 residual chlorine measurements
Guarantee	Are not
Attention	This product may expose you to chemicals including Ethylene glycol (ingested), known to the State of California to cause birth defects or other reproductive harm.