Filtering facepiece respirators (FFR) are subject to various regulatory standards around the world (see examples below) and provide a much higher level of protection with face form fitting and greater pressure drop. To claim compliance with the particular standard as listed below, these respirators must meet or exceed required physical properties and performance characteristics, which can vary according to the regulatory bodies of different countries.
N95 (United States NIOSH-42CFR84)
KN95 (China GB2626-2006)
FFP2 (Europe EN 149-2001)
The Center for Disease Control (CDC) recommends the N95/KN95/FFP2 for use in high risk situations, especially by medical personnel during pandemics.1 They are not exactly the same, but they are expected to function very similarly to one another.