Why Ultraviolet C?

UV-C Effects on Bacteria

Ultraviolet Light

Ultraviolet light is part of the light spectrum, which is classified into three wavelength ranges:
  • UV-C, from 100 nanometers (nm) to 280 nm
  • UV-B, from 280 nm to 315 nm
  • UV-A, from 315 nm to 400 nm
Protecting Artifacts From UV Light - Rosco Spectrum

How does UV-C work?

UV-C light is germicidal – i.e., it deactivates the DNA of bacteria, virus and other pathogens and thus destroys their ability to multiply and cause disease. Specifically, UV-C light causes damage to the nucleic acid of microorganisms by forming covalent bonds between certain adjacent bases in the DNA. The formation of such bonds prevent the DNA from being unzipped for replication, and the organism is unable to reproduce.
Diagram of ultraviolet light breaking apart pyrimidine bases in DNA