Free Chlorine Medium Range Test Kit


The HI3875 is a chemical test kit that uses the DPD method to measure free chlorine between 0 and 3.5 mg/L. The HI3875 is supplied complete with all of the reagents and equipment necessary to perform approximately 100 tests.

•  All reagents marked with expiration date and lot number for traceability
•  Checker® disc for more accurate determination
•  Pre-made reagents for ease of use

Features at-a-glance
Complete setup
•  All required materials are included with the test kit, such as the glass vials, plastic pipette, reagent packets, and Checker® disc.

  High resolution
•  Readings from 0.0 to 3.5 mg/L are determined to 0.1 mg/L resolution

  Replacement reagents available
•  There is no need to buy a new kit when reagents are exhausted. The HI3875-100 reagent set can be ordered to replace the reagents supplied with the kit.
•  This reagent set comes with 100 packets of HI93701-0 free chlorine reagent and 1 (500mL) bottle of deionized water.

  Significance of Use

•  Disinfection is a process of killing disease-causing organisms (or pathogens). Chlorine (Cl2) is a very desirable disinfectant because, when mixed with pure water, it reacts to form hypochlorous acid (HOCl) and hydrochloric acid (HCl).
HOCl (free active chlorine) is the most effective form of chlorine for disinfection of pools, spas, and drinking water.
•  Drinking water municipalities add elemental chlorine to the water supply as chlorine gas, liquid sodium hypochlorite, or dry calcium hypochlorite. In water these form free chlorine ions, which destroy isease-causing pathogens, reduce odor, eliminate bacteria and help to remove unwanted elements. The USEPA requires that residual disinfectant is present in finished drinking water to ensure there is disinfectant available throughout the distribution system, with chlorine acting as one of the disinfectants that provides said residual. However, the EPA has also set a maximum contaminant level of 4.0 mg/L for free chlorine due to potential health effects above this level.


  Range : 0.0 to 3.5 mg/L (ppm)
  Resolution : 0.1 mg/L (ppm)
  Method : DPD
  Number of Tests : 100
  CTK Type : Checker Disc
  Weight : 984 g
  Ordering Information : HI3831F test kit comes with HI93701-0 free chlorine reagent (100 packets), 500 mL deionized water, checker disc, glass vials with caps (2), and 3 mL plastic pipette.

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To make your order, please contact us at  info@polyscientific.com.my or call us at +6 06 3350 690

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