Five Star 5.2 pH Stabilizer balances the pH at 5.2, the perfect level for mashing your beer. Use 1 tbsp of Five Star 5.2 pH Stabilizer per 5 gallon batch. Gives you more consistent bittering effects from your hop additions. Lowers the amounts of solids that can create chill haze. It also keeps the hard water solids from escaping the solution and being deposited on your equipment. This is their own blend of food-grade phosphate buffers, like brewing salts.