Reagents for HI 717 Checker HC ®, 40 Tests

Range 0 - 200 ppb | ascorbic acid method | Resolution 1 ppb

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.

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

Range 0.0 - 30.0 ppm | amino acid method | Resolution 0.1ppm