Cleans and brightens metals quickly and easily, saving time, work, and manpower. Yet, when used as recommended, it does not chemically harm copper, iron, stainless steel, or glass. It can be used for manually cleaning such kitchen equipment as stainless steel table tops, counters, and food preparation equipment. This product is recommended for removing hard-water scale deposits and is satisfactory for use on stainless steel and cast iron surfaces found in dishwashing machine tanks.