Hanna HI701 Free Chlorine Colorimeter – Checker® HC

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The HI701 Checker®HC (Handheld Colorimeter) is a simple, accurate and cost effective way to measure free chlorine. Free chlorine is the active form of chlorine used for disinfection of drinking water, swimming pools and spas, and vegetable rinse water. Free chlorine in water is also harmful to a reverse osmosis membrane and needs to be monitored for removal from source water prior to being used. Designed as a more accurate alternative to chemical test kits, the HI701 free chlorine meter provides quick, accurate results in a few easy steps.

Features at-a-glance:

  • For use with freshwater samples

  • Easier to use and more accurate than chemical test kits

  • Dedicated to a single parameter

  • Small size, big convenience

  • Ideal for: Water Quality, Environmental, Education, Pools and Spas
Range 0.00 to 2.50 ppm
Resolution 0.01 ppm
Accuracy @ 25°C/77°F ±0.03 ppm ±3% of reading
Light Source LED @ 525 nm
Light Detector silicon photocell
Method adaptation of the USEPA 330.5 and Standard Method 4500-Cl G
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type (1) 1.5V AAA
Auto-off after two minutes of non-use
Dimensions 81.5mm x 61mm x 37.5mm (3.2" x 2.4" x 1.5”)
Weight 64 g (2.25 oz.)
Ordering Information HI701 Checker® is supplied with (2) sample cuvettes with caps, free chlorine reagent starter kit for 6 tests (6 powder reagent packets), battery, instructions and quick start guide.
Warranty 1 year limited warranty


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