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How much does this increase effectiveness? And does it also work as a protection from the outside?
by xigoi 4y ago
How much does this increase effectiveness? And does it also work as a protection from the outside?
- Animats 4y agohttps://1lnfej4c7wie44voctzq1r57-wpengine.netdna-ssl.com/wp-content/uploads/2021/05/Fact_Sheet_Face-Mask.pdf https://1lnfej4c7wie44voctzq1r57-wpengine.netdna-ssl.com/wp-...
- OJFord 4y agoI imagine it's more that it's a cheap way of achieving the effectiveness, vs. a (hypothetical/possibly extant, no idea) that doesn't use one. 'N95' is just a rating (roughly the same as 'FFP2' in Europe) concerning the rate of filtration. Yes, it 'works as a protection from the outside', they block those particles they are rated to protect, which (by diameter of particle) includes the coronavirus. Scarves and pieces of generic cloth or polyester sold as 'coronavirus mask' obviously do also protect from the outside, they're not somehow directional, it's just that they aren't particularly effective at relevant particle sizes, to put it in the extreme: they'll catch your sneezes. Of course they'll catch others' sneezes too, but usually people don't sneeze on your face, so it gets talked about as inside/outside as though direction matters.