3 ms·
"mask is designed to filter out at least 95% of particles that are 0.3 microns or larger in size" Isnt the coronavirus much smaller than .3 microns?
by themark 7y ago
"mask is designed to filter out at least 95% of particles that are 0.3 microns or larger in size"
Isnt the coronavirus much smaller than .3 microns?
- dougabug 7y agoThe droplets from sneezing, coughing, or even breathing are much larger than the coronavirus, for which they are a transport mechanism.