Filtrite pH Buffer contains sodium bicarbonate which is used to increase the pH and total alkalinity in swimming pools to prevent pH bounce, corrosion and staining. A high quality balancing chemical that helps to maintain pH within the normal range of 80 - 150ppm. This pH buffer enhances swimmer comfort and it also assists in protecting pool equipment and swimming pool surfaces. It is available in 3 convenient sizes of 2kg, 4kg and 10kg.