What Is Pm2 5 Mask?

- May 05, 2020-

N95 and N99 masks should be able to block 95% and 99% of PM2. 5-Particles with a diameter less than or equal to 2.5 microns (30 times smaller than the width of a human hair tress) PM2. The 5 particles are a complex combination of pollutants, including dust, pollen, smoke and mist.