Disposable Face Mask article - Nipissing University- กรอง maske ffp3 อนุกรม ,Disposable Face Mask Ratings: N95, P2, BFE, CE. What does NIOSH Approved mean? The N95 surgical face mask has been recommended by USA experts as the best protection from SARS. The mask has a >99% BFE (Bacterial Filtration Efficiency). The N95 is the USA equivalent of the European P2 and P3 masks with the P3 offering the higher protection. The

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