Bionizer Blue is a non-toxic cationic polymer clarifier and is suitable for all pool types. The inert polymer of Bionizer Blue binds to the microscopic size particles that cause pool cloudiness. This creates larger particles that can then be removed with normal filtration. The pool water will regain its clarity and sparkle like never before. Our Bionizer Blue bottle contains 1 litre of clarifier and has double the strength of similar products – a must have for every pool.