What is N95 Mask / Mask Breathing Resistance Tester?
The N95 mask is one of the nine anti-particulate masks certified by the National Institute of Occupational Safety and Health (NIOSH). "N" means "not resistant to oil" (the oily fume produced by cooking is oily. Particulate matter, and the flying dust produced by people talking or coughing is not oily), that is, its material is only suitable for filtering non-oily dust, and 95 means its filtration efficiency can reach at least 95% efficiency, that is to say, when using the special particle test test, the mask The particle concentration inside is at least 95% lower than the particle concentration outside the mask. N95 is not a specific product name. As long as the product meets the N95 standard and passes the NIOSH review, it can be called "N95 type mask".