The standard bearers in ozone and advanced oxidation processes (AOP), Prozone has been making pools and spas drinking water pure for 40 years. The graphic above shows the Prozone 40th logo front and center – representing our water ozonators by glowing and producing bubbles. Each of the larger bubbles has inside it an image of an marketing product from different points in our history as a company. Below each bubble are brief descriptions of the individual images.