Hasa Phos Out Plus, a concentrated treatment for phosphate removal in swimming pools, is capable of eliminating up to 10,000ppb of phosphates per quart in 10,000 gallons of pool water. This non-toxic solution, safe for both your family and the environment, effectively targets and removes phosphates from sources such as fertilizers, cleaners, pool chemicals, and other pollutants. Manufactured by Hasa, this 32oz product model 77121 ensures a cleaner and healthier swimming pool environment.