HI93735-00 Hardness Total (0 to 250 mg/L) – Reagents -100 Tests

Range 0 - 20 ppm | ESPA method | Resolution 0.1ppm

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 0.0 - 8.0 ppm | DPD method | Resolution 0.1ppm

Range 0.0 - 15 ppm | Molybdenum Blue Method | 0.1ppm resolution