Does UV Light Actually Disinfect and Kill Viruses?

Does UV Light Actually Disinfect and Kill Viruses?. The sun produces three different types of rays: UVA, UVB, and UVC. UVC rays never actually make it to the Earth's surface, so the only UVC light humans are exposed to is artificial. . It has the shortest wavelength and the highest energy and is a known disinfectant for air, water, and nonporous surfaces. . Several studies, have found that UVC light may be effective against SARS-CoV-2, but more research is needed. Researchers say most home-use UV light products don't achieve their claimed level of disinfection. But if you still want to give a UV lamp a try, here are a few things to keep in mind before you buy:. Mercury lamps can be dangerous, so look for mercury-free devices or those that are labeled "excimer-based." . Look for wavelengths between 240-280 nm, according to the CDC. UVC light is the most effective on hard, non-porous objects and tends to be ineffective on surfaces with bumps or ridges. UVC radiation can potentially cause eye injuries and skin burns, so opt for enclosed devices rather than wands