5% Acetic Acid (AFCO 1253) is a 5% solution of acetic acid, a non-foaming, relatively non-hazardous and non-toxic acid cleaner. It can be used for soak, manual, or C.I.P. cleaning to remove hardness scale, cement, rust stains, milkstone and a wide variety of other soils from equipment, masonry, tile, and various stone surfaces.