Table 4.7.

Classification of air filters according to European EN779 Standard

Standard	EN779:2002		EN1822-1:2007
Specification	Arrestance (%)	Particle counting efficiency at 0.4 μm (%)	MPPS efficiency (%)
G1	50 ≤ A m < 65
G2	65 ≤ A m < 80
G3	80 ≤ A m < 90
G4	90 ≤ A m
F5		40 ≤ E m < 60
F6		60 ≤ E m < 80
F7		80 ≤ E m < 90
F8		90 ≤ E m < 95
F9		95 ≤ E m
E10			85 ≤ E < 95
E11			95 ≤ E < 99.5
E12			99.5 ≤ E < 99.95
H13			99.95 ≤ E < 99.995
H14			99.995 ≤ E < 99.999 5
U15			99.999 5 ≤ E < 99.999 95
U16			99.999 95 ≤ E < 99.999 995
U17			99.99 995 ≤ E