These lamps consist of a T8 tubular glass envelope and emit more than 85% of their energy in the UV-C ultraviolet radiation with a peak at 253.7nm for germicidal use. Their primary application is disinfection and sterilisation of water, air, and surfaces. The short wavelength of UV-C rays destroys the DNA of micro-organisms.
UV-C light rays are aggressive and dangerous for human beings and animals. It is to comply with the pertinent regulations when using these lamps.