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by blotter_paper
2171 days ago
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It's probabilistic, like everything, but N-95 masks do protect the wearer from particles that small. The CDC purposefully lied to you so that you wouldn't stockpile masks they (understandably) wanted to use elsewhere. /https://www.semanticscholar.org/paper/Filtration-Performance... >Consistent with single-fiber filtration theory, N95 and P100 respirators challenged with silver monodisperse particles showed a decrease in percentage penetration with a decrease in particle diameter down to 4 nm. |
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