Research into UV-C

Research into UV-C

Extensive research shows that UV-C is a very strong disinfectant. A lot of additional research is now being done into the effects of UV-C in the context of the Coronavirus (COVID-19).

“Can UV-C help prevent the transmission of COVID-19 by reducing contamination?”

Answer of the International Untraviolet Association:

“Based on existing evidence, we believe so.”

UV-C light has been used extensively for over 40 years in disinfecting drinking water, waste water, air, pharmaceutical products, and surfaces against a whole suite of human pathogens. All bacteria and viruses tested to date (many hundreds over the years, including other coronaviruses) respond to UV disinfection. Some organisms are more susceptible to UV-C disinfection than others, but all tested so far do respond at the appropriate doses.

Ultraviolet LEDs prove effective in eliminating coronavirus from surfaces and, potentially, air and water.

According to research by the University of Santa Barbara.

The use of UV-LED technology

Much attention has turned to the power of ultraviolet light to inactivate the novel coronavirus. As a technology, ultraviolet light disinfection has been around for a quite some time. Large-scale efficacy against the spread of SARS-CoV-2 has yet to be shown but UV shows a lot of promise. Many hospitals around the world use it.

Seoul Semiconductor in early April reported a 99.9 sterilization of coronavirus (COVID-19) in 30 seconds with their UV LED products. That technology is currently being adopted for UV LED lamps that sterilize the interior of unoccupied vehicles.

Not all UV wavelengths are useful for disinfection

It is important to realize that not all UV wavelengths are the same. UV-A and UV-B, the types that reach the earth thanks to the sun, have important applications. Only UV-C is the type of UV that can be used to purify air and water and to inactivate microbes. This form of ultraviolet light can only be generated artificially.


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