1. C Wood C Wood United States says:

    You guys are missing the key point about N95-the non woven electret layer.  Particles smaller than 30 microns are strongly attracted by vanderwahls forces to the charged fibers and are very effectively filtered.  Well explained by MinutePhysics on YoutTube: https://www.youtube.com/watch?v=eAdanPfQdCA

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