Use biocides safely. Always read the label and product information before use Treatment Test the water for Free Chlorine using a CHLORINE TEST KIT. It is recommended swimming pool water is shock dosed after Heavy Bathing and/or during warm weather to ensure water clarity is maintained and sanitiser efficiency. Ensure bathing has ceased before adding chemicals to the water. Add OPC Chlorine Shock Granules directly to circulating water with water temperature above 200C (for temperatures below 200C add product to 10 litres of clean water in a clean plastic container and add to directly to the circulating pool water.) To increase Free Chlorine reading by 1 PPM (parts per million) add 75g per 50 M3 (11,000 gallons) of swimming pool water. A shock dose of Chlorine Shock should achieve a reading between 5 – 8 PPM During the shock dose process always ensure water is circulating via the filter and all pool covers are removed. After 24 hours re-check Free Chlorine Readings and pH levels. Swimming should not resume until Free Chlorine levels are below 5 PPM (but above 2 PPM) and pH levels are 7.3 – 7.5. Storage & Handling Store in a cool, dry place. Contact with combustible materials may cause fire. Do not mix with other chemicals. Always wear suitable gloves and eye protection when handling.
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