The Ultraviolet Sterilizer (UVS) is the final process where 99.8% of all micro-organisms, including reproducing bacteria and viruses, are sterilized. Ultraviolet replacement U.V. lamps are also available. Please specify voltage when ordering. Ultraviolet irradiation is now accepted by both the EPA and the FDA as a safe, effective method of bacteria control. Various models available to meet flow requirements.