pH Adjuster, Product Label pH Down, Container Type Bag, Container Size 5 lb, Cleaner Form Granular, pH Value Acidic, pH Level Less Than 1, Standards EPA, Biodegradable No, Calcium Free Yes, Color White, Fragrance Unscented, Phosphate Free Yes, Primary Chemical Sodium Hydrogen Sulphate, Sodium Sulphate, Properties Calcium Free, Phosphate Free, Salt System Compatible Yes