In 1877 Downes and Blunt discovered sunlight’s ability to prevent microbial growth. In 1930, Gates published the first analytical bactericidal action spectrum noting peak effectiveness at 265 nm, very near the 254 nm output of germicidal lamps. Since then, multiple research studies have confirmed that UVC light is effective in inactivating or eliminating viruses and bacteria.
Today, news reports show that UVC light is being used to clean hospitals, subways, airports, and other places where people gather. With the global COVID-19 pandemic, virtually every industry is looking at UVC as a means to quickly and effectively reduce the spread of SARS-CoV-2.