Total Chlorine Liquid Reagents (300 tests) HI93701-T

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The HI93701-T are reagents for the colorimetric determination of total and free chlorine, for use with Hanna’s compatible benchtop and portable photometers. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each bottle for traceability.
  • Pre-made reagents for ease of use
  • Prepared with high purity chemicals
  • Marked with expiration date and lot number for traceability


The HI93701-T are high quality liquid reagents that allow for users to achieve fast and accurate colorimetric measurements. These reagents follow an adaptation of the USEPA method 330.5 and Standard Method 4500-Cl G. The methods use a DPD reagent in which the reaction between chlorine and reagent causes a pink tint in the sample. By simply adding the 3 drops of HI93701A-T and 3 drops of HI93701B-T and 1 drop of HI93701C-T total chlorine can be measured. Additionally free chlorine can be measured by using 3 drops of HI93701A-T and 3 drops of HI93701B-T. By adding the reagents to the sample, the reaction will take place and one of Hanna’s compatible benchtop or portable photometers will determine the concentration from the color that is produced. The results will be displayed in mg/L (ppm) of free or total chlorine. These reagents are designed to be used with samples that have an expected range of 0.00 to 5.00 mg/L free or total chlorine.

Compatible Photometers Include:









Package dropper bottles
Quantity 300 tests free or total chlorine
Method adaptation of the USEPA method 330.5 and Standard Method 4500-Cl G.
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