KN95 vs PM2.5 Face Masks - frisco rail yard
May 17, 2020·Here is an in-depth comparison of the two masks to help in decision making. Basics. Before diving into the differences, it is essential to define their names. KN95 is a Chinese standard of a face mask that is equivalent to N95. On the other hand, PM2.5 face masks stand for any mask that can filter out particles larger than 2.5 micrometers.