Calcium Carbonate is used to lower the acidity in wine. 2.5 grams per gallon will lower the acidity approximately 0.1% You do not want to adjust your wine more than 0.3 - 0.4% or you will end up with a chalky/ gritty taste in your wine.
Cesium carbonate 534-17-8 wiki
Calcium Chloride is used by brewers to lower the pH, and add water hardness to the beer. Use up to 1 teaspoon per 5 gallons before the boil.
Calcium Chloride- 2 oz. by Midwest Home Brewing and Winemaking Supplies
Midwest Supplies - Wine Making & Homebrew Supplies
Midwest Supplies - Wine Making & Homebrew Supplies
Wine Making Additives and Ingredients – Midwest Supplies
Calcium Chloride is used by brewers to lower the pH, and add water hardness to the beer. Use up to 1 teaspoon per 5 gallons before the boil.
Calcium Chloride- 2 oz by Midwest Home Brewing and Winemaking Supplies
Midwest Supplies - Wine Making & Homebrew Supplies
Calcium Carbonate or food grade chalk contributes to increases in pH, water hardness and alkalinity. Carbonate functions as a buffering agent against
Calcium Carbonate 2 oz
2 pounds of Calcium Carbonate by The Seed Supply Used in 100s of Industries for Multiple Situations Increases Minerals in Soil Odor & Moisture
2 Lb Calcium Carbonate Limestone Powder by The Seed Supply - Rock Dust - Great Soil Amendment and Fertilizer
Calcium Carbonate Powder Calcium carbonate is a mineral salt. MICRONA Ag H2O-10 Solution Grade (325 mesh) is an ultra-fine, white, natural limestone
Bulk Calcium Carbonate Powder Ag - 50 lbs.