pH-granules are designed to lower and stabilize the pH value of pool water when it is above the norm (7.2 - 7.6). The optimal pH provides effective disinfection, prevents corrosion, scale formation and skin irritation. The dosage is usually about 150g per water to lower by 0.2 units. Main characteristics and use: Function: Reduces the pH of water in swimming pools and jacuzzis. Ideal values: Maintain pH in the range of 7.2–7.6. Dosage: Usually 1.5 kg of the product lowers the pH by 0.2 units per water. The "pH" value is easily determined by measuring with a chlorine content tester and "pH" level. How to use: Dissolve the granules in advance in a container of water, then pour the solution around the surface of the pool or directly into the skimmers (with running filtration). Safety: Work with protective gloves, mask and goggles; do not apply near metal parts. Packaging: Available in 8 kg and 25 kg packages.