Lactic Acid Email to a Friend $3.35 Qty: Add to Cart OR Add to Wishlist | Add to Compare Product Description Used to lower the pH of a mash and finished beer. Can also be used to add a sour flavor to specialty styles. 88% solution. 5 fluid ounces. 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 Calcium Carbonate, 2 oz. Ascorbic Acid Citric Acid, 8 oz.