Reagents for HI 717 Checker HC ®, 40 Tests

Range 0:00 to 7:00 g / L | Photometric Method | Resolution 0.01g / L

Range 0-999 ppb | ASTM Method D1687-92 diphenylcarbonate | 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.