Continue shopping “B7021 Blue Devil 0.5 oz. Test Kit Reagent Solution OTO Chlorine” has been added to your cart. Product Price Quantity Total × B7021 Blue Devil 0.5 oz. Test Kit Reagent Solution OTO Chlorine $7.31 B7021 Blue Devil 0.5 oz. Test Kit Reagent Solution OTO Chlorine quantity $7.31 Cart totals Subtotal $7.31 Shipping Shipping costs will be calculated once you have provided your address. Total $7.31 Proceed to checkout — OR — Calculate shipping Country / region: Select a country / region… United States (US) State / County: City: Postcode / ZIP: Update