Calcium Lime and Rust Remover Surfaces for Use On Brass Chrome Copper Fiberglass Glass Porcelain Plastic Stainless Steel Vinyl Trigger Spray Bottle 32 oz Fragrance Unscented Concentrated Recommended Dilution 1 8 (Light Soil) 1 1 (Medium Soil) EPA Safer Choice Primary Chemical None Cleaner Form Liquid Product Series CLR(R) Pro Application Temperature 40 Degrees F or Above Features Safe On All Plumbing Including Copper and Plastic/PVC VOC Content 0 Percent Biodegradable Yes