Sustain No. 464 is a no-rinse acid sanitizer used in the dairy, food and beverage processing industry for CIP and COP pipeline, silo, tank and equipment cleaning. With regular use at proper concentrations, Sustain, No. 464 will prevent the formation of milkstone, beerstone and time scale deposits. Primarily for use on stainless steel and plastic materials. Do not use on aluminum or other soft metal.