PREZYME PRESOAK INSTRUMENT CLEANER, ENZYME-BASED PRESOAK. THIS UNIQUE ENZYME FORMULA PREVENTS CONTAMINANTS FROM DRYING ON INSTRUMENTS BY IMMEDIATELY DISSOLVING AND REMOVING SOILS SUCH AS DRIED BLOOD, MUCUS, DEBRIS AND FOREIGN MATTER. SAFE FOR GLASS, PLASTICS AND METALS. ALSO USED AS AN ULTRASONIC CLEANING SOLUTION OR EVACUATION SYSTEM CLEANER. BORAX FOR ADDED CLEANING CAPABILITY. CONCENTRATED. AVAILABLE IN GALLONS.