HTH Liquid Chlorine, 1 gal. is a powerful two-in-one sanitizer and shock treatment that effectively kills bacteria and algae to keep your pool clean and safe. Formulated with sodium hypochlorite and containing 10% available chlorine, this liquid chlorine ensures optimal sanitation without causing over-stabilization. It comes in a convenient ready-to-use 1-gallon pour bottle, making it easy to apply and maintain your pool’s cleanliness. Model Number: