AOP is the Advanced Oxidation Process. Germicidal ultraviolet light and ozone react, a new powerful sanitizer is produced: the Hydroxyl Radical.
This reaction is called Advanced Oxidation Process. Hydroxyl radicals (•OH) are the most powerful oxidation agents available for residential pools. AOP can quickly destroy 99.99% of bacteria, viruses, pathogens and other contaminants that occur in the water.
Hydroxyl radicals also destroy chlorine-resistant microorganisms, such as CryptosporidiumParvum, Giardia, and E.Coli.