OZONE FOOD PURIFIER OZONE Food Purifier (OFP) applies patented Electrolytic OZONE Generator technology. Just place OFP in a water container and it will convert water into OZONE water for purification. Compared with the traditional corona discharge method, OFP provides safer dissolved OZONE water as it generates OZONE from water so it does not produce harmful by-products (Nitrogen Oxides). OZONE reverts to oxygen after sanitation. It’’s safe and non-toxic.