Does UV light kill COVID-19?
See full answerUltraviolet (UV) rays are part of sunlight. Studies show that UV light can be used to kill airborne COVID-19 particles and disinfect surfaces. For this reason, some hospitals, subways, and other public locations are using UV light to help disinfect areas when they are not occupied by people. While helpful for cleaning these areas, UV light has not been shown to prevent COVID-19 infection in humans or to kill the virus in infected patients. The safety and efficacy of many UV light devices sold to the public are not routinely reviewed, so these should be used with caution. Overexposure to ultraviolet rays can have harmful health effects and is a major risk factor for cancer. For these reasons, you should wear sunscreen on exposed skin when you’re in the sun for long periods.
Whats the difference between sanitizing and disinfecting to protect against COVID-19?
Disinfecting uses chemicals to kill germs. While it doesn’t necessarily clean dirty surfaces or remove germs, it kills germs and can lower the risk of spreading infection.Sanitizing is removing and lowering numbers of germs to a safe level, as judged by public health standards.
Does UVC work on viruses other than the new coronavirus(COVID-19)?
Studies have shown that it can be used against other coronaviruses. One study found at least 15 minutes of UVC exposure inactivated SARS, making it impossible for the virus to replicate.
Can ultraviolet lamps damage the skin?
UVC radiation can cause severe burns (of the skin) and eye injuries (photokeratitis). Avoid direct skin exposure to UVC radiation and never look directly into a UVC light source, even briefly. If customers identify a problem with a UVC lamp, they can report it to the manufacturer and the FDA.
What are the different types of lamps that can produce UVC radiation?
Low-pressure mercury lamp: Historically, the most common type of lamp used to produce UVC radiation was the low-pressure mercury lamp, which has its main (>90%) emission at 254 nm. Other wavelengths are also produced by this type of lamp.