Lowers acidity in wine. Use 1/2 teaspoon per gallon to lower acidity 0.1%. Use before fermentation.

Calcium Carbonate is used to lower acidity in wine. Use 1/2 teaspoon per gallon to lower acidity 0.1% Use before fermentation. In brewing Calcium Carbonate increases pH. 1 gram per gallon will add approximately 106 ppm of calcium and 158 pmm of carbonate.