| Grade |
Element colour |
Particle removal |
Remaining oil |
Description |
Air Quality |
| WG |
White |
15 micron |
5.0 mg/m3 |
Pre-filter |
ISO8573.1 Class 4 Solid, Oil 4 |
| PD |
Green |
1 micron |
0.1 mg/m3 |
General purpose |
ISO8573.1 Class 2 Solid, Oil 2 |
| PL |
Blue |
0.01 micron |
0.01 mg/m3 |
High Efficiency |
ISO8573.1 Class 1 Solid, Oil 1 |
| PR |
Yellow |
0.01 micron |
0.01 mg/m3 |
Post Dryer Dust filter |
ISO8573.1 Class 1 Solid, Oil 1 |
| PX |
Red |
0.01 micron |
0.001 mg/m3 |
Ultra High Efficiency |
ISO8573.1 Class 1 Solid, Oil 1 |
| WC |
Metal |
|
0.003 mg/m3 |
Carbon Filter Elements |
ISO8573.1 Class Oil 1 |