| Certification/ Class (Standard) | KN95 (GB2626-20 06) |
| Filter performance – (must be ≥ X% efficient) | ≥ 95% |
| Test agent | NaCl |
| Flow rate | 85 L/min |
| Total inward leakage (TIL)* – tested on human subjects each performing exercises | ≤ 8% leakage (arithmetic mean) |
| Inhalation resistance – max pressure drop | ≤ 350 Pa |
| Flow rate | 85 L/min |
| Exhalation resistance -max pressure drop | ≤ 250 Pa |
| Flow rate | 85 L/min |
| Exhalation valve leakage requirement | Depressurizatio n to 0 Pa ≥ 20 sec |
| Force applied | -1180Pa |
| CO2 clearance requirement | ≤ 1% |
