The KN95 is an industry standard for respiratory equipment which has the intended effectiveness of filtering 95% of particulate grater than .3 microns.
Click the links below for downloadable certification:
KN95 masks are considered respiratory protective equipment.
Certification/ Class (Standard) | KN95 |
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 | ≤ 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 | Depressurization to 0 Pa ≥ 20 sec |
Force applied | -1180 Pa |
CO2 clearance requirement | ≤ 1% |
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