Description: PM 2.5 Vs N95 Vs N99 What's The Best Face Mask for Me ...Jul 31, 2020N95, N99, FFP1, and Surgical face mask(if wear properly) work. PM 2.5 mask (cloth pocket with replaceable activated carbon filter inserts) may work at some level, but we don’t recommended it because of insufficient data. N95 masks are tighter than surgical masks (loose fitting). N ...
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