9.0% HCL. Clings to vertical surfaces allowing time to penetrate build ups such as algae stains, rust, and soap scum from urinals, toilet bowls, bath tubs, shower stalls, etc. Leaves a clean, fresh fragrance. USDA C1, NSF registered. Fruit scent. pH: <1.0. RTU. 32-oz bottle. 12 bottles per case. Sold by the case.