Hanna Instruments

Total Chlorine Ultra Low Range Colorimeter HI761 Hanna Checker - Fresh Water

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Four simple steps to results. Easily and accurately test for ultra-low range total chlorine in with the Hanna Checker Colorimeter - Total Chlorine Ultra-Low Range (HI 761). Designed to be more a more accurate alternative to chemical test kits. First, add sample to the included cuvette. Next, insert the sample into the Checker and zero the instrument with your water sample. Then, remove the sample and add the reagent. Finally, place the vial into back into the Hanna Checker, press the button and read the results. Done.


Easier to use and more accurate than chemical test kits.

The HI 761 from Hanna Instruments uses an adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample. Auto shut off after 10 minutes of non-use.



Dedicated to a single parameter

Two sample cuvettes and caps. Six packets of reagents for total chlorine ultra-low range


Small Size, Big Convenience

Weighing just 64 g (2.25 oz.), the Checker®HC easily fits into the palm of your hand or pocket. Use for quick and accurate on the spot analysis. Single button operation: Zero and Measure Operated by a single AAA battery.

  • Range:0 to 500 ppb
  • Resolution: 1 ppb
  • Measurement Method: Colormetric
  • Accuracy: ±5 ppb ±5% of reading
  • Light Source:Photodiode @525 nm
  • Light Detector: Silicon photocell
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