For total chlorine determination by the DPD Method. USEPA accepted for reporting for drinking and wastewater analysis using Hach Method 8167. Range: 0.02 – 2.00 mg/L Cl2. Sample Size: 10 mL. Pack of 100 powder pillows. Boric Acid free! *This product has not been evaluated to test for chlorine and chloramines in medical applications in the United States.