Select effective filter elements based on the type of particles in the air
GB 2626-2019
Classification | Filtration efficiency ≥90% | Filtration efficiency ≥95% | Filtration efficiency ≥99.97% |
KN Class | KN90 | KN95 | KN100 |
KP Class | KP90 | KP95 | KP100 |
KN type: suitable for filtering non-oily particles larger than 0.075 microns
KP type: suitable for filtering oily particles larger than 0.185 microns
Non-oily particles: solid and non-oily and microorganisms, such as coal dust, cement dust, acid mist, paint mist, etc.
Oily particles: oil smoke, oil mist, asphalt smoke, coke oven smoke, diesel exhaust particles
