Effective in hard water up to 200 ppm (calculated as CaCO3) in the presence of a moderate amount of soil (5% organic serum) according to the AOAC Use-dilution Test. Use in schools, colleges, institutional facilities, public facilities, factories, shower and bath areas, locker rooms, cafeterias, and institutional kitchens. Us on washable hard, nonporous surfaces of bathroom fixtures, cabinets, countertops, floors, and exteriors of appliances.