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Comparison of Filtering Facepiece Respirator Classes (N95 vs. KN95)

Use the chart below to compare performance standards of common respirator masks, including KN95

This document is only intended to help clarify some key similarities between maks, specifically to the following FFR performance standards:

  • N95 (United States NIOSH-42CFR84)
  • FFP2 (Europe EN 149-2001)
  • KN95 (China GB2626-2006)
  • P2 (Australia/New Zealand AS/NZA 1716:2012)
  • Korea 1st class (Korea KMOEL - 2017-64)
  • DS (Japan JMHLW-Notification 214, 2018)
Certification/ Class (Standard) N95 (NIOSH-42C
FR84) 		FFP2 (EN 149-2001) KN95 (GB2626-20 06) P2 (AS/NZ 1716:2012) Korea 1st Class (KMOEL - 2017-64) DS (Japan JMHLW-
Notification 214, 2018)
Filter performance – (must be ≥ X% efficient) ≥ 95% ≥ 94% ≥ 95% ≥ 94% ≥ 94% ≥ 95%
Test agent NaCl NaCl and paraffin oil NaCl NaCl NaCl and paraffin oil NaCl
Flow rate 85 L/min 95 L/min 85 L/min 95 L/min 95 L/min 85 L/min
Total inward leakage (TIL)* – tested on human subjects each performing exercises N/A ≤ 8% leakage (arithmetic mean) ≤ 8% leakage (arithmetic mean) ≤ 8% leakage (individual and arithmetic mean) ≤ 8% leakage (arithmetic mean) Inward Leakage measured and included in User Instructions
Inhalation resistance – max pressure drop ≤ 343 Pa ≤ 70 Pa (at 30 L/min)
≤ 240 Pa (at 95 L/min)
≤ 500 Pa (clogging) 		≤ 350 Pa ≤ 70 Pa (at 30 L/min)
≤ 240 Pa (at 95 L/min) 		≤ 70 Pa (at 30 L/min)
≤ 240 Pa (at 95 L/min) 		≤ 70 Pa (w/valve)
≤ 50 Pa (no valve)
Flow rate 85 L/min Varied – see above 85 L/min Varied – see above Varied – see above 40 L/min
Exhalation resistance - max pressure drop ≤ 245 Pa ≤ 300 Pa ≤ 250 Pa ≤ 120 Pa ≤ 300 Pa ≤ 70 Pa (w/valve)
≤ 50 Pa (no valve)
Flow rate 85 L/min 160 L/min 85 L/min 85 L/min 160 L/min 40 L/min
Exhalation valve leakage requirement Leak rate ≤ 30 mL/min N/A Depressurizatio n to 0 Pa ≥ 20 sec Leak rate ≤ 30 mL/min visual inspection after 300 L /min for 30 sec Depressurizatio n to 0 Pa ≥ 15 sec
Force applied -245 Pa N/A -1180 Pa -250 Pa N/A -1,470 Pa
CO2 clearance requirement N/A ≤ 1% ≤ 1% ≤ 1% ≤ 1% ≤ 1%
*Japan JMHLW-Notification 214 requires an Inward Leakage test rather than a TIL test.