UV water sterilizer, UV water purifier,ultraviolet water sterilizer Stainless steel housing, quartz UV lamp, quality ballast. UV water sterilizer, UV water purifier,ultraviolet water sterilizerATLAS403-LM units could sterilize and clean water with flow ... water chamber maximizing full use of the available ultra-violet energy, resulting in long exposure times and high UV doses and minimizing UV light ...