10 Best Face Masks for Virus Protection Reviewed & Rated 2020
Dec 03, 2020·Aside from N95 and P100 face masks, you can also use medical-grade masks that have high fluid resistance. Ideally, these should be the ones that have level 3 resistance according to the ASTM. How Does It Work. Face masks are air filters that you wear on your face. The masks are made of non-woven materials.