CLASSIFICATION TABLE OF FILTRATION CLASSES ACCORDING TO EN 779
Mean value of separation Am (%)	Mean value of separation Em(%)	EN 779	Use for operation
<= 65		G 1	For gross fixation of dust. As prefilters for gross fixation of highly concentrated dust in air-conditioners and ventilation units and inlet tracts.
65 - 80		G 2
80 - 90		G 3
>= 90		G 4
	40 Em 60	F 5	Second stage of filtration for separation of fine dust and as prefiltration for absolute filters. Designed for air-conditioners and ventilation units and inlet tracts in hospitals, hotels, office buildings, laboratories and production areas
	60 Em 80	F 6
	80 Em 90	F 7
	90 Em 95	F 8
	95 Em	F 9

	CLASSIFICATION TABLE OF FILTRATION CLASSES H10 - U17 ACCORDING TO EN 1822
Mean value of separation  E (%) MPPS	Filtration  class  EN 1822
85	H 10	Absolute filters for very effective filtration of air. Designed as final elements for the third stage of filtration for operating rooms, pharmaceutical industry, laboratories, food industry, chemical industry and electrical engineering industry.
95	H 11
99,5	H 12
99,95	H 13
99,995	H 14
99,9995	U 15
99,99995	U 16
99,999995