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On Wednesday, April 22, 2020, 12:13:51 AM UTC, Terry Blanton <[email protected]> wrote: On Tue, Apr 21, 2020 at 3:32 PM Michael Foster <[email protected]> wrote: Yes, 254 nm is an excellent virus killer. However, unlike 222 nm, long term exposure to 254 nm can cause damage to the eyes and skin. As Jonathan Berry points out 222 nm won't even penetrate the water film on your eyes. Well, there's only about a million 254 nm UVGI systems out there and they are quite inexpensive. But, if you feel compelled to stare at the photon source, spring for these $10 safety glasses. They meet CSA Z94.3 standards. https://smile.amazon.com/gp/product/B000USRG90/ Virus-free. www.avast.com
