Full Description Zep Calcium, Lime & Rust Stain Remover – Concentrate – 128 fl oz (4 quart) – 1 Each – Yellow General Information Manufacturer:Zep, Inc.Manufacturer Part Number:ZUCAL128Manufacturer Website Address:http://www.zepinc.comBrand Name:ZepProduct Name:Calcium, Lime & Rust Stain RemoverMarketing Information: Calcium, Lime and Rust Stain Remover breaks up deposits quickly, removing stains and buildup. This professional-grade, concentrated acidic solution removes rust stains, limescale, hard water stains and calcium deposits. Use on stucco, cement, porcelain, glass, fiberglass and brick, making it ideal for use on toilets, sinks, tubs, shower heads and glassware. Mix with water and apply to surfaces with a brush, sponge or cloth. Then rinse with clean water. Packaged Quantity:1 EachProduct Type:Multi-Surface Cleaner Product Information Cleaner Form:ConcentrateCleaner Volume:128 fl oz (4 quart)Acidic:YesRecommended Use: Calcium Deposit Remover Limescale Remover Rust Remover Stain Remover Hard Water Remover Directions/Instructions:The Calcium, Lime & Rust Stain Remover should be rinsed off quickly after applying, so keep a Pail of clean water handy for easy rinsing.Application/Usage:Multi Surface Physical Characteristics Product Color:Yellow Miscellaneous Recycled:NoAssembly Required:NoCountry of Origin:United States