If you have hard water, eliminate the problem by adding Beer Clean mineral solvent to your sink's water before adding Beer Clean bar glass cleaner and Beer Clean bar glass sanitizer. Mineral solvent serves as a “booster" in the water softening process which is especially important in adjusting local water conditions. It ties up hard water minerals to obtain maximum cleaning results, ensuring your beer is free of taste pollutants. This product helps provide thoroughly cleaned glassware with no odor, aftertaste, or residue. Clean beer glasses deliver better-looking beer with bigger heads for higher profits. Single use packets allow for better dilution control. This product is NSF G6 registered for steam table treatment. Beer Clean mineral solvent is part of the Beer Clean complete system for cleaning and sanitizing bar glassware using a 3-compartment bar sink.