The N95 mask is one of nine types of particulate protective mask certified by NIOSH
The N95 mask is one of nine types of particulate protective mask certified by NIOSH, (the National Institute for Occupational Safety and Health. N95 is not a specific product name, as long as it meets the N95 standard and passes the NIOSH review, it can be called N95 mask, which can achieve filtration efficiency of more than 95% on particles with an aerodynamic diameter of 0.24±0.6 m (physical diameter of 0.075 m±0.020 m).
