What's the difference between KN95 and N95 masks?

They're mostly identical, but from different countries.

As far as how well they protect against COVID-19 and filter out particles, a KN95 and N95 are the same. But there are a few differences on other fronts.

  • KN95 meet Chinese standards for masks, while N95 masks meet US standards.
    • Every country has its own standard. Ex. KF94 is the Korean code, FFP2 is the EU and UK code.
  • Both KN95 and N95 masks are rated to capture 95% of tiny particles (0.3 micron particles).
  • Both KN95 and N95 masks fit tightly around your nose and mouth.
  • KN95 mask manufacturers are required to run fit tests on humans with ≤ 8% leakage, while N95 masks are not.
  • N95 masks have slightly higher restrictions for pressure drop while inhaling and exhaling (read: better breathability). 

To learn more about KN95 and N95 masks from the FDA, read their FAQ.

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