13 Watt GX23 Base PL-S TUV Germicidal Ultraviolet Light Bulb 13W (13 Watts Two molded snaps GX23) 13 Watt GX23 Base PL-S TUV Germicidal Ultraviolet Light Bulb 13W Anyray AUVC-13W2 100% Ozone Free Short-wave UV radiation with a peak at 253.7 nm (UVC) for disinfection purposes GX23 Base UV Bulb , Length 7-1/4"-Inch Long Life 10,000 Hours Germicidal Ultraviolet Light UV Bulb, LAMP Warning sign on lamp indicates that the lamp radiates UVC