What is the acronym of N95 mask?

The acronym of N95 mask stands for "National Institute for Occupational Safety and Health" (NIOSH). N95 masks are regulated by the National Institute for Occupational Safety and Health (NIOSH), which is a federal agency in the United States that sets standards for workplace safety and health. N95 masks meet or exceed specific standards set by NIOSH for filtering particles from the air, including at least 95% of very small (0.3 micron) particles.