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Free Chlorine Reagent Powder Pillows, DPD (pk/1000)
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For determination of free chlorine by the DPD method.
For use with Hach's Chlorine Visual Test Kits.
Sample Size: 5 mL. Range: up to 3.5 mg/L Cl₂.
Pack of 1000 powder pillows.
Boric Acid free!