Drafted advanced beer line cleaner will clean the most stubborn draft lines. Its proprietary formulation was designed to attack not only the beer stone, but every element of beer line soils. Used as directed, drafted beer line cleaner will eliminate mineral crystals, hops, resins, proteins, carbohydrates and bio films that are embedded or adhere to the polymers of the beer tubing. Blue trace line indicator identifies that lines are being cleaned. Manufactured in the us.