Table 4 Standards for facepiece respirators
Certification/class (standard) | N95(NIOSH-42CFR84) | FFP2 (EN 149-2001) | KN95 (GB2626-2006) | P2 (AS/NZ 1716:201) | 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 | Depressurization to 0 Pa ≥ 20 s | Leak rate ≤ 30 mL/min | Visual inspection after 300 L/min for 30 s | Depressurization to 0 Pa ≥ 15 s |
Force applied | − 245 Pa | N/A | − 1180 Pa | − 250 Pa | N/A | − 1470 Pa |
CO2 clearance requirement | N/A | ≤ 1% | ≤ 1% | ≤ 1% | ≤ 1% | ≤ 1% |