UVC light is short-wavelength ultraviolet light at a wavelength of 200-290 nanometres. It is characterized as germicidal because it inactivates bacteria and viruses, from the seasonal flu to SARS-CoV-2. It disrupts the molecular bonds of their DNA and RNA, preventing the viruses from reproducing and causing illness. Note that UVC light can be dangerous to humans if used in an open environment. Rensair’s UVC light is safely encapsulated within the filter and hence presents no exposure risk.