uv bulbs, used for killing bacterium,water treatment,hospital etc uv bulbsHigh Output Quartz lamps,it have ozone and free ozone types the Ultroviolet intensity is more than 2 times of normal uv lamps. so very economical,and better choiceModelTubeBF-BFArc lengthPowerCurrentVoltage at 50/60HZVoltage at High FreqUV output at 254nmRated Life mmmmmm(W)(A)(V)(V)uW/cm2W NormalLong Life GPH436T5L/ ...