There are 362 nanofiber mask for sale on Etsy, and they cost $15.45 on average. Velcro neck strap: never lose it, just let it hang! Set where you live, what language you speak, and the currency you use. Etsy sellers cannot make medical or health claims. “Double layers of nanofiber” with high filtration efficiency, BFE over 99.9%; 4th. Great! Women's Single Floral Fabric Face Mask - Universal Thread™ Gray S/M. QANLIIY Face Masks Disposable Safety Face Masks. Classic solid colors in a treated nanofiber exterior and second layer of this four layer mask. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. Comfortable fit – Secure-but-not-restrictive, with a soft, customizable nose bridge, and adjustable ear loops with toggles for added … Free returns. DOI: … Most existing masks are less efficient due to moisture generated when breathing in an electrostatic manner. We've sent you an email to confirm your subscription. 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Nano Membrane Filter is 0.1 μm larger than air particles and smaller than harmful particles, and is filtered by the nanofiber … More information: Sana Ullah et al, Reusability Comparison of Melt-Blown vs. Nanofiber Face Mask Filters for Use in the Coronavirus Pandemic, ACS Applied Nano Materials (2020). There's a problem loading this menu right now. 628. 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