4 ms·
KN95 spec allows a percentage of unfiltered air to be inhaled which kinda defeats the purpose no?
by alliao 7y ago
KN95 spec allows a percentage of unfiltered air to be inhaled which kinda defeats the purpose no?
- ISL 7y agoEvery mask will allow some fraction of unfiltered air to be inhaled. The question is: how much is permissible?
- celeritascelery 7y agoWouldn’t that be true of any mask?
- fock 7y agoYesterday, I read some paper from 2010 which found near identical filtration results for one type of N95 mask vs. 2 types of N99 mask... Basically none of these masks will filter all the particles, hence healthcare worker will eventually infect themselves unless you go full warzone (e.g. hazmat suites for everyone). All of this stuff is about managing risk (as is running around with simple masks and social distancing).