One such UVC LED can emit strong ultraviolet light at 278nm for more than 10,000 hours. UVC light destroys the DNA of bacteria and other germs. LEDs of this spectrum are mainly used for the disinfection of air, water and surfaces.
Due to powers of just a few milliwatts, only motionless water and air masses could be sterilised. The new, high-performance radiation sources allow for new applications such as use in air conditioning systems or purification of running water.