Puri Sol is an advanced cleaner for water storage tanks formulated especially for periodic cleansing of water tanks and pipe work. Cleans, purifies and eliminates tastes and odours in water tanks and water systems. Triple Action: Cleans water systems, tank, pipes, pump, taps Destroys bacteria, viruses, spores, algae, fungi, cysts, and bacteria biofilm Eliminates tastes and odours Formulation is a unique synergistic blend of chlorine dioxide and powerful cleaning components. When adding fresh water to the tank use only AquaSol to purify the water. Part No. 9-19807 - 300ml x 6 bottles (each bottle treats up to 250 litre tank)