This Calcium Lime and Rust Remover Concentrate instantly removes calcium deposits, limescale and rust stains. The concentrated acid formula works on a variety of surfaces including concrete, porcelain, glass, metal, cement, stucco, chrome and more. Supplied as an 1 litre bottle. Features and Benefits Instantly removes calcium deposits, limescale and rust stains The concentrated acid formula removes heavy mineral deposits even when diluted Suited for use on porcelain baths, shower heads, sinks, toilets, cement, glass and fibreglass Typical Applications Use on porcelain baths, shower heads, sinks, toilets, cement, glass and fibreglass Notes Not suitable for use on wood, fabric, natural stone, aluminium, brass or painted surfaces. It may etch older sinks, baths and tiles