A New Alternative – Visible Light
Researchers at University of Strathclyde discover that bacteria and microorganisms can be killed by 405 nm Visible light, patenting the initial technology in 2007.
405nm light is near UV, but NOT UV, and has been shown safe for humans/materials.
Lighting As Disinfection
Active Light Disinfection uses specific wavelengths (not chemicals) to inactivate pathogens.
In particular, Ultraviolet (UV) light is strongly germicidal, and has been used for many years in a variety of applications, including instrument sterilization and air handler coil cleaning.
UV light attacks the DNA structure of many cells, rendering them inactive. However, prolonged UV exposure can be dangerous to humans or animals and can accelerate material degradation.
Bacteria & Viruses can be rendered inactive with near-UV, UV, & far-UV light sources.