How is the N95 mask standard different from masks with P2, KN95 and FFP2 standards?

The mask standards mentioned above are all standards used to evaluate the effectiveness of face masks. To protect the wearer from small dust particles, aerosols, and germs.

Each standard originates from a different region. and has testing criteria Filtration efficiency and different certifications

Sumamry:

• N95, KN95 and FFP2 have similar filtration efficiency (94-95%).
• P2 has a slightly lower filtration efficiency (94%), but it is considered to be in the same standard rank as all three standards above.
• N95 and KN95 tested against smaller droplets (0.3 microns)
• P2 and FFP2 tested with larger droplets (0.6 microns)
• Therefore, if you want to prevent PM2.5 with a dust size of 2.5 microns, which is larger than the size of the dust particles that were tested. As can be seen from the table above. Therefore, you can be confident that all 4 standard masks can protect against PM2.5 dust well.