So an N95 mask is capable of filtering at least 95% of particles that are 0.3 microns in size or larger. There are other different types of masks: N99 and N100 Masks: These provide even higher ...

$25+ at Amazon These USA-made N95 masks also made the NIOSH-approved list for effective particle filtering and a design that uses multiple layers for at least a 95% filtration rate. The active ...

N95 face masks can block more than 95 percent of microparticles measuring 5 micrometers in size or smaller. The masks are essential protective gear for health care workers when providing medical ...