Calcium Lime and Rust Remover Surfaces for Use On Brass Chrome Copper Fiberglass Glass Porcelain PVC/Plasic Stainless Steel Vinyl Drum 55 gal Concentrated Recommended Dilution 1 8 (Light Soil) 1 1 (Medium Soil) Cleaner Form Liquid Product Series CLR(r) Pro Rinse Required Yes VOC Content 0 Percent NSF Rating A3 Nonflammable Yes Net Weight 5 gal