Gypsum, 2 oz. Email to a Friend $1.59 Qty: Add to Cart OR Add to Wishlist | Add to Compare Product Description Calcium sulfate water salts. Improves the crispness of hop flavors. Reduces PH of water for mashing and sparging. 2 oz. jar. Double click on the above image to view full-sized. Reviews and Tags Product Tags Product Tags Add Tags: (what is this?) Add Tags Use spaces to separate tags. Use single quotes (‘) for phrases. Product Reviews Be the first to review this product My Cart You have no items in your shopping cart. Recently Viewed Products Five Star pH 5.2 Clarity-Ferm Citric Acid, 2 oz. Calcium Chloride, 2 oz.