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by PaulKeeble 503 days ago
FFP3 and N95 masks will stop micro and nano plastics but the issue is its polypropylene, so the question becomes how much it sheds verses how much it blocks. Most of the PM2.5/10 tests against these masks shows they are better than outside air but I don't think the exact composition is fully understood. Based on how its sort blown molten fibres I suspect it sheds quite large bits of plastic if it does.