General Filter | Technology for clean air

CLASSIFICATION OF GENERAL VENTILATION FILTERS ACCORDING TO THE EN 779:2002 NORM

Filter class according to EN 779:2002	Average gravimetric efficiency	Average colorimetric efficiency	Filter class according to UNI 10339	Filter efficiency according to UNI 10339
Filter class according to EN 779:2002	Am %	Em %	Filter class according to UNI 10339	Filter efficiency according to UNI 10339
G1	Am < 65		1	M
G2	65 ≤ Am ≤ 80		2	M
G3	80 ≤ Am ≤ 90		3	M
G4	90 ≤ Am		4	M
F5		40 ≤ Em ≤ 60	5	A
F6		60 ≤ Em ≤ 80	6	A
F7		80 ≤ Em ≤ 90	7	A
F8		90 ≤ Em ≤ 95	8	A
F9		95 ≤ Em	9	A

CLASSIFICATION OF HEPA FILTERS ACCORDING TO THE EN 1822 NORM

CLASSIFICATION OF HEPA FILTERS ACCORDING TO THE EUROVENT 4/4 NORM

Filter class according to Eurovent 4/4	Initial efficiency	Penetration	Filter class according to UNI 10339	Filter efficiency according to UNI 10339
Filter class according to Eurovent 4/4	Ei %	P %	Filter class according to UNI 10339	Filter efficiency according to UNI 10339
EU10	95 ≤ Ei < 99,9	5 ≥ P > 0,1	10	AS
EU11	99,9 ≤ Ei < 99,97	0,1 ≥ P > 0,03	11	AS
EU12	99,97 ≤ Ei < 99,99	0,03 ≥ P > 0,01	12	AS
EU13	99,99 ≤ Ei < 99,999	0,01 ≥ P > 0,001	13	AS
EU14	99'999 ≤ Ei	0,001 ≥ P	14	AS

CAIR PURITY CLASSES FOR PARTICLES ACCORDING TO THE FED. STD 209E NORM

Air purity class		Max particles concentration per m³
International system	English units	0,1 µm	0,2 µm	0,3 µm	0,5 µm	5 µm
M 1		350	75,7	30,9	10
M 1,5	1	1240	265	106	35,5
M 2		3500	757	309	100
M 2,5	10	12400	2650	1060	353
M 3		35000	7570	3090	1000
M 3,5	100		26500	10600	3530
M 4			75700	30900	10000
M 4,5	1000				35300	247
M 5					100000	618
M 5,5	10000				353000	2470
M 6					1000000	6180
M 6,5	100000				353000	24700
M 7					10000000	61800

FILTER USE IN VENTILATION PLANTS IN ACCORDANCE WITH THE UNI 10339 NORM

Building classification into	Filter class		Filter efficiency
UNI 10339	Min.	Max.	Filter efficiency
BUILDINGS FOR RESIDENTIAL PURPOSE AND THE LIKE
Houses, colleges, warehouses and storage places	4	7	M*, M+A
Penitentiaries, barracks, cloisters	4	7	M*, M+A
Hotels, boarding houses	5	7	M+A
OFFICE PERMISES AND THE LIKE
Officies in general	5	7	M+A
Meeting rooms	5	7	M+A
Data Processing centres	6	9	M+A
HOSPITALS, CLINICS, NURSING HOMES AND THE LIKE
Hospitalisation (2-3 beds) , wards	6	8	M+A
Sterilised and infective rooms	10	11	M+A+AS
Maternity ward, anaesthesia ward, radiology	10	11	M+A+AS
Premature babies ward, operating rooms	11	12	M+A+AS
Out-patients' departments, visits	6	8	M+A
Stays, physical therapies	6	8	M+A
RECREATIONAL, SOCIALIZING AND RELIGIOUS BUILDINGS
Cinemas, theatres, conference rooms	5	6	M+A
Museums, libraries	7	9	M+A
Worship places	4	6	M*, M+A
Restaurant bars, ballrooms	3	5	M*, M+A
Dining rooms, restaurants	5	6	M+A
Dance halls	3	5	M*, M+A
Kitchens	2	4	M
BUSINESS ACTIVITIES AND THE LIKE
Department stores, shops in general	4	6	M*, M+A
Grocers'	5	6	M*, M+A
Photographers' and chemists'	5	6	M+A
Waiting areas in banks	4	6	M*, M+A
Fair Grounds	2	3	M
BUILDINGS FOR SPORT ACTIVITIES
Swimming pools, saunas and the like	4	6	M*, M+A
Gymnasiums and the like	2	4	M
BUILDING FOR SCHOLASTIC ACTIVITIES
Kindergardens and primary schools	7	9	M+A
Classrooms in general	5	6	M+A
Music and language laboratoires	6	7	M+A
Laboratoires in general	6	7	M+A

(*) To employ up to class 4 of filter efficiency