Hach DPD Total Chlorine Reagent Powder Pillows, 25 mL, Pack of 100, Ranges LR: 0.02-2.00 mg/L ; MR: 0.05-4.00 mg/L ; HR: 0.1-10.0 mg/L Cl₂, USEPA Accepted Method 8167, Water Analysis, 1406499

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