This acid based, non-foaming final rinse is used by many brewers who prefer the non-foaming action for their fermenters, serving tanks, part soaking and more. Saniclean requires a contact time of 2-3 minutes. Effective for 1 week after mixing with water. This product is not recommended to use on soft metals, like Aluminum. Use 2oz of Saniclean per 5 gallons of water.