Contains Sodium Percarbonate and Sodium Sulfate. Use 1 tablespoon per gallon of water for best results. 8oz Screw-top jar. Oxygen based with favorable cleaning power and sanitizes on contact. Does not stain and will not impart odors or off flavors. Great for the home brewer of Beer, Wine and Soda. Clean and sanitize all your brewing equipment in one step. Does not foam. Product now comes in a bag as plastic jars are unavailable.