The Diversey Suma Cal-X is a concentrated acidic cleaner for the removal of limescale from kitchen equipment and utensils, as well as for descaling dishwashing machines. Brightens dull metal surfaces by removing oxide film. Safe on stainless steel, glass, copper, or plastic when used as directed. Canister of a concentrated acidic cleaner used to remove limescale, protecting equipment, and improving assurance of hygiene. Capacity: gal. Four canisters per carton. Active ingredients: nitric acid, hydroxyacetic acid. Kosher, halal, Letter of No Objection. Concentrated formulation. Brightens dull metal surfaces by removing oxide film. Safe on stainless steel, glass, copper, or plastic when used as directed. Shelf life: two years. Safety Data Sheet.