Most pH increasers, commonly used for pools and hot tubs, do not contain sodium metabisulfite. The typical active ingredient in pH increasers is sodium carbonate (also called soda ash) or sometimes sodium bicarbonate (baking soda).
Sodium metabisulfite is a chemical more often used as a disinfectant, antioxidant, or preservative, and it generally lowers pH rather than raising it.
- If you have a pH increaser product, check the label for ingredients.
- If sodium metabisulfite is present, it is unusual and not typical for pH increaser products.
In conclusion: No, pH increaser products usually do not contain sodium metabisulfite.
