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Which UV wavelengths best disinfect Covid-19 as thorough tests are done by NIST and DHS

At optics.org, to disinfect a surface, you can illuminate it with a blast of ultraviolet light. But to specifically inactivate SARS-CoV-2, the virus that causes Covid-19, which wavelengths are best? And how much radiation is enough? To answering those questions requires scientists to overcome two main obstacles: first, they need to separate the virus completely…

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