Burton Water salts contain papain to prevent chill haze.
1 package is sufficient for 5 gallons.
Burton water salts are a mixture of mineral salts used in soft to medium hard water to increase hardness and salinity. Unlike gypsum, which just provides calcium for hardness, Burton Water Salts provide magnesium for yeast nutrition, and the chloride ions (salt) included impart a more full-bodied taste to beer.