Hach Hach DPD Free Chlorine Reagent Powder Pillows, 2105569, 10ML, 100 Pcs/Pack (Inc. VAT) AED39.40 . 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... (Inc. VAT) AED39.40 . Quick view Qty in Cart: 0 Price: (Inc. VAT) AED39.40 . Subtotal: