Concrobium Calcium, Lime & Rust Remover is a non-corrosive, readily biodegradable solution that safely and effectively removes calcium, lime, rust and hard water stains with no toxic fumes. It’s also septic safe.
The solution is ideal for porcelain, acrylic, fiberglass, stucco, brick, cement, glass, chrome and stainless steel. Test on an inconspicuous section first. Note: May etch older surfaces. May return older cement to its original white appearance. Rinse thoroughly with water after use.
Do Not Use On: natural stone, marble, terrazzo, colored grout, painted/metallic glazed surfaces, plastic laminates, Formica, aluminum, pewter, copper, brass, zinc, steam irons, refinished tubs or any damaged or cracked surfaces.