• UVGI is an electromagnetic radiation which sterilizes microbes such as bacteria, viruses and molds.
  • At a wavelength of 2,537 Angstroms (254 nm) UV destroy nucleic acids in microbes disrupting their DNA

Ultraviolet Germicidal Irradiation Lighting General Information

Ultraviolet Germicidal Irradiation (UVGI) is an electromagnetic radiation disinfection method that uses ultraviolet light (shorter than visible light) to kill microorganisms such as bacteria, pathogens, viruses and molds. lighting-ultraviolet-NM-rangesEven parasites such as Cryptosporidia or Giardia, which are extremely resistant to chemical disinfectants, are efficiently reduced. It is a purely physical, chemical-free process.

UV Germicidal Irradiation  Types

UV can be separated into various ranges, with short range UV (UVC) being germicidal-UV. At a wavelength of 2,537 Angstroms (254 nm see image right) It destroys the nucleic acids in these micro organisms disrupting their DNA, leaving them unable to reproduce. It is quick and clean, leaving no taint, chemicals or residues in the water.  UV treatment is quick. Not only that, in terms of primary energy use, it is 20,000 times more efficient than boiling water. The use of UVGI to sanitize has been an accepted practice for the last 65 years or more. A disadvantage of the technique is that water treated by chlorination is resistant to reinfection, where UVGI water must be continually passed threw the UV lamp system. The sterilized microorganisms are not removed from the water after treatment, nor remove dissolved compounds and/or particles in the water.