What is a PM 2.5 mask?

- May 14, 2020-

The "N95" label represents the shielding ability, which can filter out at least 95% of airborne particles larger than 0.3 microns (for reference, PM2.5 particles are 2.5 microns). 5 particles, but sensitive people may consider using these masks N99 Version (N99 means to filter out more 99% of the particles in the air).