Shipping: Eligible for Free Shipping Program
California - In Stock
Pennsylvania - In Stock
Calcium Sulfate. Used to add permanent hardness (Calcium ions) to brewing water. 1 gram in 1 gallon changes the salt levels by 61.5 ppm calcium, 147.5 ppm sulfate and adds 153.5 ppm to the hardness.
Promash is a useful utility to calculate water salts.