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What is UV light?
Ultraviolet radiation, or UV light for short, as a part of non-visible light, covers a wavelength range of 100-400 nanometers (nm). It is the most energetic part of optical radiation. The so-called UVC radiation is particularly short-wave (200-290 nm) and can be artificially generated by UV lamps and used for disinfection of a wide variety of areas.
Advantages of UV disinfection
The use of light for disinfection offers many advantages. Resources are conserved and no chemicals are used. Germs also do not develop any resistance to the UV light and can thus be rendered permanently harmless within seconds. UVC radiation can be generated in the form of UVEDs, excimer lamps or mercury UV lamps.
UV technology and UV lamps have been used to efficiently disinfect water, air and surfaces for around 50 years. UV light is successfully used in various areas, such as laboratories, production lines in industry or by municipalities for the treatment of drinking water. However, UV disinfection is now also used in public areas such as airports, shopping arcades or public authorities.
Possible applications for
UV disinfection
How does UV disinfection work?
UVC radiation is artificially generated by UV lamps and radiated onto a target (surface, water, air). The DNA or RNA of the germs is completely inactivated by the UVC radiation. The germ can no longer multiply and is thus rendered harmless. With the power of light, a disinfection of up to 99.9999 %* is achieved within seconds.
UVC radiation
* Study of the University Hospital of Tübingen - bioRxiv preprint doi: https://doi.org/10.1101/2020.09.22.308098
