2 ms·

> See, for example, KN95 masks. IIRC, the issue with KN95 respirators is not the standard itself, but a massive problem with not-up-to-spec counterfeits being

by ardy42 7y ago

> See, for example, KN95 masks. IIRC, the issue with KN95 respirators is not the standard itself, but a massive problem with not-up-to-spec counterfeits being offered on the market.