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Response to TheBlackAdder (Original post)

Sun Mar 29, 2020, 11:08 AM

6. Should work theoretically - the problem is facial fit (esp. for healthcare workers

who are constantly within 6 ft of patients)

The virus that causes COVID-19 is approximately 0.125 micron (125 nanometers) in diameter. It falls squarely within the particle-size range that HEPA filters capture with extraordinary efficiency: 0.01 micron (10 nanometers) and above. Many media outlets have incorrectly stated that HEPA filters don’t filter below 0.3 micron and therefore can’t capture the new coronavirus. That claim is flat wrong. (This NASA study of HEPA filtration is quite technical, but the graph on page 7 and the preceding paragraph do a good job of explaining why HEPA filters are actually most efficient—almost 100 percent at 0.01 micron—at capturing ultrafine particles below the 0.3-micron HEPA test standard.)

https://thewirecutter.com/blog/can-hepa-air-purifiers-capture-coronavirus/

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Replies to this discussion thread
Arrow 21 replies Author Time Post
TheBlackAdder Mar 2020 OP
Merlot Mar 2020 #1
happybird Mar 2020 #4
happybird Mar 2020 #2
Merlot Mar 2020 #8
gibraltar72 Mar 2020 #3
In_The_Wind Mar 2020 #7
dweller Mar 2020 #5
LineReply Should work theoretically - the problem is facial fit (esp. for healthcare workers
dalton99a Mar 2020 #6
Merlot Mar 2020 #9
TheBlackAdder Mar 2020 #12
WePurrsevere Mar 2020 #10
Jersey Devil Mar 2020 #11
TheBlackAdder Mar 2020 #13
ornotna Mar 2020 #14
Jersey Devil Mar 2020 #15
ornotna Mar 2020 #17
TheBlackAdder Mar 2020 #18
CrispyQ Mar 2020 #16
KY_EnviroGuy Mar 2020 #19
TheBlackAdder Mar 2020 #20
KY_EnviroGuy Mar 2020 #21
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