FFP3 VS FFP2 VS N95 VS KN95 VS KF94 VS KN90 Mask FFP3 > FFP2=N95=KN95=KF94 > KN90
In fact, the letters in front of each mask type represent different national standards. The “N” series of the mask is the American NIOSH standard, the “KN” series is the Chinese standard, the “FFP” series is the European standard, and the “KF” series is the Korean standard.
And then, the number after the letter refers to the protection ability, the larger the number, the higher the protection level.
For example, 95 refers to the ability to filter out more than 95% of non-oily particles, so the 90 series is not as protective as 95 but is also resistant to more than 90% of particulates. In the European standard FFP series, “2” basically corresponds to “95”, and “3” is more efficient, up to 99%. If the number ends with the letter "V", it indicates that there is a breathing valve on the mask, such as the common N95 8210V mask.
To sum up, if we sort the filtering capabilities, we can simply understand it as: