Calcium Lime and Rust Remover Surfaces for Use On Hard Nonporous Surfaces Plastic Jug 42 oz Fragrance Acidic Concentrated Recommended Dilution 1 8 (Light Soil) 1 1 (Medium Soil) EPA Safer Choice Cleaner Form Liquid Product Series CLR(R) Pro Rinse Required Yes VOC Content 0 Percent NSF Rating Not Rated Nonflammable Yes Flash Point None Biodegradable Yes