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