UV Germicidal lamp UVC bulbs/Ultraviolet light/UV light T5(4w,6w,8w,13w,16w) T8(15w,18w,25w,30w,36w,55w). PL-S(5w,7w,9w,11w,13w) PL-L(18w,24w,36w,55w) Radiation Peak Value: 253.7 Glass martiral: quartz or boric Lifespan:6000-8000hours CE&ROHS Approval. Feature: 1,Killing bacterium widely used in public palce,such as hospital, hotel,school etc. and water treatment,purifying air. 2,Emitstrong ultraviolet radiation, have good function of sterilization.