One of Hach's most popular test kits, it uses powder DPD reagent that reacts with chlorine more quickly than tablet-for m DPD, giving more accurate results. Powder DPD also has a considerable advantage over orthotolidine, a hazardous substance sometimes used as a chlorine test reagent. The simple, low-cost color disc method is the most accurate visual test kit method. Measures free chlorine in the 0-3.5 mg/L range.
One of Hach's most popular test kits, it uses powder DPD reagent that reacts with chlorine more quickly than tablet-for m DPD, giving more accurate results. Powder DPD also has a considerable advantage over orthotolidine, a hazardous substance sometimes used as a chlorine test reagent. The simple, low-cost color disc method is the most accurate visual test kit method. Measures free chlorine in the 0-3.5 mg/L range.
