From the level of filter elements, it can be divided into KN class for filtering non-oily particles and KP class for filtering oily and non-oily particles, and this is marked, which is similar to N and R/P stipulated in CFR 42-84-1995 interpretation guidelines
|
Filter element type |
Mask category |
||
|
disposable mask |
half face mask |
full face mask |
|
|
KN Type |
KN90 KN95 KN100 |
KN90 KN95 KN100 |
KN95 KN100 |
|
KP Type |
KP90 KP95 KP100 |
KP90 KP95 KP100 |
KP95 KP100 |
In terms of filtration efficiency, this standard is similar to the N-series masks specified in the CFR 42-84-1995 interpretation guide:
|
Categories and levels of filter elements |
Sodium chloride particles were used for detection |
Oil particles were used for detection |
|
KN90 |
≥90.0% |
No apply |
|
KN95 |
≥95.0% |
|
|
KN100 |
≥99.97% |
|
|
KP90 |
No apply |
≥90.0% |
|
KP95 |
≥95.0% |
|
|
KP100 |
≥99.97% |
In addition, GB 2626-2006 also have general requirements, appearance inspection, leakage, respiratory resistance, breathing valve, dead cavity, field of view, headband, connection and connection parts, lenses, air tightness, flammability, cleaning and disinfection, information to be provided by the manufacturer, packaging and other technical requirements.
Link to this article：What is KN95 3
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