This cleaner is excellent for removing stubborn organic debris that can stain your surgical instruments. It is a blend of four different enzymes to be the most effective cleaner available.Free of metal attacking agents. Does not contain scale forming phosphates, chlorides or hydroxidesConcentrated for best economy. Only 1 oz. (30ml) is needed for 1 gallon of wash solutionCleans a wide range of metal surfaces. Safe and effective for stainless steel, aluminum, tungsten carbide, copper and brass instrumentsAvailable 4 gallons/case