High Quality COnstruction Air Filter
Perkins, Scanica, Cummins, Iveco, etc
A particulate air filter is a device composed of fibrous materials which removes solid particulates such as dust, pollen, mold, and bacteria from theair. A chemical air filter consists of an absorbent or catalyst for the removal of airborne molecular contaminants such as volatile organic compounds or ozone. Air filters are used in applications where air quality is important, notably in building ventilation systems and in engines.
Perkins, Scanica, Cummins, Iveco, etc
A particulate air filter is a device composed of fibrous materials which removes solid particulates such as dust, pollen, mold, and bacteria from theair. A chemical air filter consists of an absorbent or catalyst for the removal of airborne molecular contaminants such as volatile organic compounds or ozone. Air filters are used in applications where air quality is important, notably in building ventilation systems and in engines.
European Normalisation standards recognise the following filter classes: [2]
| Usage | Class | Performance | Performance test |
Particulate size approaching 100% retention |
Test Standard |
|---|---|---|---|---|---|
| Primary filters | G1 | 65% | Average value | >5 µm | BS EN779 |
| G2 | 65–80% | Average value | >5 µm | BS EN779 | |
| G3 | 80–90% | Average value | >5 µm | BS EN779 | |
| G4 | 90%– | Average value | >5 µm | BS EN779 | |
| Secondary filters | F5 | 40–60% | Average value | >5 µm | BS EN779 |
| F6 | 60–80% | Average value | >2 µm | BS EN779 | |
| F7 | 80–90% | Average value | >2 µm | BS EN779 | |
| F8 | 90–95% | Average value | >1 µm | BS EN779 | |
| F9 | 95%– | Average value | >1 µm | BS EN779 | |
| Semi Hepa | H10 | 85% | Minimum value | >1 µm | BS EN1822 |
| H11 | 95% | Minimum value | >0.5 µm | BS EN1822 | |
| H12 | 99.5% | Minimum value | >0.5 µm | BS EN1822 | |
| Hepa | H13 | 99.95% | Minimum value | >0.3 µm | BS EN1822 |
| H14 | 99.995% | Minimum value | >0.3 µm |
BS EN1822 |