Use D-Rustor for fast, safe complete removal of rust and corrosion from, steel, concrete, porcelain, fiberglass, and other surfaces. D-Rustor may also remove other scale buildups and deposits. D-Rustor’s thick clinging gel gives longer contact time and improved chemical reaction.D-Rustor may be diluted up to 1:3 or used full strength depending on severity of rust. It is safe to use on aluminum, brass, bronze, cast iron, chrome, concrete, copper, fiberglass, nickel plate, porcelain tile, stainless steel, zinc plate, and grout. D-Rustor phosphatizes the metal to help prevent further corrosion.