3 ms·
They're guaranteed to stop 95% of the hardest to stop particulates which actually tend to be somewhat larger than viruses.
by Symmetry 7y ago
They're guaranteed to stop 95% of the hardest to stop particulates which actually tend to be somewhat larger than viruses.
- supermatt 7y agoYes, i was correcting you on your statement of 99%+. Its >95% of 0.3 micron particles, but as coronavirus is smaller it would be LESS than that - not more).