Homemade N95 Respirator Mask Instructions (Using HEPA

Apr 09, 2020 · N95 respirator masks are designed out of a non-woven material which can filter 95% of airborne contaminants of 0.3 microns or larger. The coronavirus is approximately 0.120 microns (or 120nm) in diameter ( Source ).

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10 Best N95 Respirator Masks For Coronavirus

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