30 Seconds Calcium, Rust and Lime Remover is industrial strength, so it simply dissolves calcium deposits, lime scale and rust marks. It's completely safe to use on crystal, stainless steel, fiberglass, porcelain, masonry, stucco, brick, glass and tile and all your bathroom fixtures.
You can even use it on your washing machines, kettles, coffee pots, vases and humidifiers.
30 Seconds Calcium, Rust and Lime Remover is biodegradable, phosphate free, septic safe, and contains no ammonia or bleach.