Dry acid is a white crystallized granular substance used to lower swimming pool water pH.
HOW TO USE DRY ACID IN POOLS & SPAS
- Dry Acid is used to lower the pH and to maintain total alkalinity TA in swimming pools and spas. It is safer and easier to use than hydrochloric acid (muriatic).. It is easier to store but it also must be handled with care. The ideal pH of pool water should be 7.0-7.6 and total alkalinity should be maintained between 80 and 120ppm.
- Pre-dissove the dry acid first by adding the dry acid into a large plastic bucket of water and then pouring the acid solution into the deep end of the pool, away from the skimmer and the fixtures. The Acid should be added when the pump is on and running. Retest the pH of the water in 4 hours and add more acid if needed.
- Helpful Tips: Do not add more than 150g of dry acid per 10,000 litres of pool water at any one time. Never add dry acid more than 3 times per day. Do not adjust the pH without first testing the Total Alkalinity. Dry acid may be used in a spa or hot tub.
|Assay||99.5 min||% w/w|
|Clarity of 10% soln||Clear|
|Insoluble %||0.05 max||w/w|
|Iron (as Fe)||10 max||Ppm|
|Heavy Metals||10 max||Ppm|
|pH of 5% solution||4.0 – 4.8|