A current list of DIY masks for the COVID-19 pandemic – Knowm.org
Apr 1, 2020 · The N95 respirator has an FE of >95% and a BFE of >>99% [ref]. ... Protection,, Sealed full face shield and rear-facing mask filter ... This mask is intended for medical staff and not for private individuals. ... Medically approved/certified masks are in very short supply and need to go to front-line ...
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