Low pH formulated surface cleaner, specialty, non-corrosive organic acid cleaner that safely removes rust, calcium hard water stains, lime and other contaminants with ease from porcelain, fiberless, stainless steel, mild steel, concrete, chrome and other surfaces. Produces no fumes or irritating mists. Tile & grout cleaner as is 1:10, cement /etch as is 1:5, steel cleaning: 1:2-10, shower cleaner as is 1:5. Acid solution 1-10 oz per gallon. Click on the "Product Details" tab above, to select container size.