Zep Commercial Calcium, Lime & Rust Stain Remover is a concentrated acid formula that instantly removes calcium deposits, lime scale and rust stain.This concentrated formula can be used on stucco, cement, porcelain, glass and fiberglass to remove stains and discoloration.Zep Commercial Calcium, lime & Rust Stain Remover can be used to clean tubs, sinks, toilets, and brick removing even the toughest stains.This cleaner is not for use on wood, fabric, natural stone, aluminum, brass, chrome or painted surfaces.
- Mix with warm water to dilute
- Apply with brush, sponge, or cloth
- Test surface before use
- Rinse after 5-10 minutes