(MIN310) A blend of natural minerals designed to harden your water for brewing. This is particularly important when brewing beers from grains. The pH level of your water plays an important role in the waters ability to leach out compounds from the grains. This product contains a balance blend of calcium sulphate, magnesium sulphate and sodium chloride. It also has an organic compound call papain. It is included to help prevent beers from forming a haze when chilled. Each packet is enough to treat 5 gallons of water.