3 ms·
Yes, 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).
by supermatt 7y ago
Yes, 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).