... for water treatment/UV-C 1.Quartz glass 2.T5L/4P 3.Tube Dia.:15mm UV Germicidal lamp,Ultraviolet lamp,UV sterilizer,UV lamp for ... water treatment/UV-CT5L/4P(4w,6w,8w,10w ... of sterilization.3,Have strong ultraviolet radiation. Single ended 4pins UV lamp for Water treatment Quartz sleeve UVc Germicidal Lamp