These Free Chlorine Powder Pillow reagents are USEPA accepted for reporting in drinking water and wastewater analysis using Hach Method 8021. For best results use with a Hach colorimeter or spectrophotometer.
Product Details
• Pack of 1000 powder pillows
• 10 mL sample size
• Range from: 0.02 - 2.00 mg/L Cl₂
• Boric Acid free!
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