Slim & compact UV sterilizer disinfects water up to 1 GPM. Durable stainless steel chamber treats water naturally without leaving taste or odor. It is equipped with industry standard ¼” fittings for versatility & adaptability. Installation is quick and easy for effective POU protection. In theory, the reverse osmosis membrane already removes bacteria and viruses from the water, therefore, if you are on a municipal water system (tap water) in the U.S., chances are that you should not need a UV light on top of our RO system. But, if your water source is known to be unsafe with microorganisms and you want to have extra protection, then you can add an UV as an additional stage to disinfect water. APEC Ultra Violet Upgrade Kit is your best choice in ultraviolet sterilization and can be added on to any existing RO system or replace old UV unit.