Reagents for HI 761 Checker HC ®, 25 Tests

The HI 771 Checker®HC is a simple, accurate, and cost effective way to measure ultra-high ranges of chlorine. Designed as a more accurate alternative to chemical test kits, the HI 771 provides quick, accurate results in four easy steps.

Range 0 - 500 PCU | Platinum Cobalt method | Resolution 5 PCU

Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm

The HI 761 uses an adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample.