Hach® Free & Total Chlorine Color Disc Test Kit

The CN-66, a color wheel, visual test kit method, provides fast and accurate comparisons. The continuous color gradient allows better resolution of the concentration reading than stepwise comparators. This method uses powder DPD reagent that reacts with the chlorine more quickly than tablet-form DPD, giving more accurate results. 50 tests for Total Chlorine and 50 tests for Free Chlorine. Includes two reagents, color disc, color comparator box, tube, instruction sheet, and carrying case.