Compact fluorescent lamp UVC (germicidal) lamps used in residential water and air disinfection units. The compact size of the lamp allows for a small system design and design flexibility. TUV PL-S lamps offer constant UV output over their complete lifetime, for maximum security of disinfection and high system efficiency. Short-wave UV radiation with a peak at 253.7 nm (UVC) for disinfection purposes. Protective inside coating ensures constant UV output over the complete lifetime of the lamp. Lamp glass filters out the 185nm ozone-forming radiation. 2-Pin PL-S lamp base contains a special starter for almost instant starting on electromagnetic drivers. Warning sign on lamp indicates that the lamp radiates UVC. It is used in pond water units, air treatment unit, stand-alone purifiers and residential drinking water units.