The safest inhibited sulfuric acid drain opener that breaks down organic obstructions, such as grease or cellulose. It is heavier than water and sinks to the point of trouble. TEMPERED raises temperature in water to about 190 degrees F. below the boiling point of water, so it avoids dangerous blow back. ‘Avoid contact with chrome fixtures, skin and eyes. One pint will do the job on most toilet bowls, urinals, sinks, bathtubs, shower stalls and small drains. DANGER: Corrosive. Read and follow instructions on container. Less danger, less chance of burns or damage with TEMPERED TM than any other sulfuric acid drain opener. 12 qts. Per case individually wrapped in plastic bags. Always follow directions and see M.S.D.S. pH ,.5.