Air filter

Classification of the air filter :

1. Primary filter ( Pre-Filter )

  • EN 779 class                           G2 to G4
  • Average arrestance                  70% to 95% (ASHRAE 52.1.1992)
  • EUROVENT 4/5 class              EU 2 to EU 4

2. Secondary filter ( Medium Filter )

  • EN 779 class                                    F5 to F9
  • Average dust spot efficiency            70% to 95% (ASHRAE 52.1.1992)
  • EUROVENT 4/5 class                      EU 5 to EU 9

3. HEPA filter

  • EN 1822 class                                  H10 to H14
  • MPPS average efficiency                 ≥85% to ≥99.995%
  • 0.3 µm D.O.P. efficeincy                   ≥95% to ≥99.99%

4. HEPA Teflon Filter

5. HEPA box

6. ULPA filter

  • EN 1822 class                                  U15 to U17
  • MPPS average efficiency                 ≥99.9995%
  • MPPS local efficiency                       ≥99.9975%

 

Classification of air cleanness to CEN EN 1822

CE EN 1882