Comparison of Filter Classes

Various filtration standards are compared below. Although some of these standards build on one another and are coordinated with one another. Due to the different test conditions, a comparison of the filter classes is only possible approximately! Our Team will be happy to support you in selecting suitable Air filter!

Which filter classes would you like to compare?

ASHRAE 52.2.2007 vs. EN 779 & EN 1822

ISO 16890 vs. EN 772

ISO 29463 vs. EN 1822

ISO 29461 vs. ISO 29463 & ISO 16890

Comparison of filter classes according EN 779, EN 1822 and ASHRAE 52.2.

EN 779:2012	EN 779:2012	EN 1822:2009	ASHRAE‑Standard 52.2-2007
Coarse Filters Average Arrestance (Am) Final Test Pressure Drop 250 [Pa]	Medium- and Fine Filters Average Efficiency (Em) and Minimum Efficiency(M.E.) of 0.4 µm particles Final Test Pressure Drop 450 [Pa]	(H)EPA- and ULPA-Filters Efficiency	Minimum Efficiency Reporting Value (MERV)
50% ≤ Am < 65% G1			MERV 1-4
65% ≤ Am < 80% G2			MERV 1-4
80% ≤ Am < 90% G3			MERV 5
90% ≤ Am G4			MERV 6-8
	40% ≤ Em < 60% M5		MERV 8-10
	60% ≤ Em < 80% M6		MERV 9-13
	80% ≤ Em < 90% M.E.: 35% F7		MERV 13-14
	90% ≤ Em < 95% M.E.: 55% F8		MERV 14-15
	95% ≤ Em M.E.: 70% F9		MERV 16
		Overall Value ≥ 85% E10	MERV 16
		Overall Value ≥ 95% E11	MERV 16
		Overall Value ≥ 99.5% E12
		Overall Value ≥ 99.95% H13 Local Value ≥ 99.75%
		Overall Value ≥ 99.995% H14 Local Value ≥ 99.975%
		Overall Value ≥ 99.9995% U15 Local Value ≥ 99.9975%
		Overall Value ≥ 99.99995% U16 Local Value ≥ 99.99975%
		Overall Value ≥ 99.999995% U17 Local Value ≥ 99.9999%

Comparison of filter classes according to EN 779 and ISO 16890

EN 779:2012	ISO 16890 - Average Efficiency
Filter Classes	ePM₁	ePM_2,5	ePM₁₀	Coarse
G1	-	-	-	-
G2	-	-	-	30%-50%
G3	-	-	-	45%-65%
G4	-	-	-	60%-85%
M5	5%-35%	10%-45%	40%-70%	80%-95%
M6	10%-40%	20%-50%	60%-80%	>90%
F7	40%-65%	65%-75%	80%-90%	>95%
F8	65%-90%	75%-95%	90%-100%	>95%
F9	80%-90%	85%-95%	90%-100%	>95%

References:

- VDMA Air Filter Information (2018-06) page 6 for filter classes G1 - G4 respectively ISO Coarse

- EUROVENT 4/23:2020, page 18 / 9. Annex for filter classes M5 - F9 respectively ePM₁₀, ePM_2,5 und ePM₁

Learn more about ISO 16890

Comparison of filter classes according to EN 1822 and ISO 29463

		Overall Value		Local Value
Filter Classes according EN 1822	Filter Groups according ISO 29463	Efficiency	Penetration	Efficiency	Penetration
E10	-	≥ 85%	≤ 15%	-	-
E11	ISO 15 E	≥ 95%	≤ 5 %	-	-
E11	ISO 20 E	≥ 99%	≤ 1%	-	-
E12	ISO 25 E	≥ 99.5%	≤ 0.5%	-	-
E12	ISO 30 E	≥ 99.90%	≤ 0.1%	-	-
H13	ISO 35 H	≥ 99.95%	≤ 0.05%	≥ 99.75%	≤ 0.25%
H13	ISO 40 H	≥ 99.99%	≤ 0.01%	≥ 99.95%	≤ 0.05%
H14	ISO 45 H	≥ 99.995%	≤ 0.005%	≥ 99.975%	≤ 0.025%
H14	ISO 50 U	≥ 99.999%	≤ 0.001%	≥ 99.995%	≤ 0.005%
U15	ISO 55 U	≥ 99.9995%	≤ 0.0005%	≥ 99.9975%	≤ 0.0025%
U15	ISO 60 U	≥ 99.9999 %	≤ 0.0001%	≥ 99.9995%	≤ 0.0005%
U16	ISO 65 U	≥ 99.99995%	≤ 0.00005%	≥ 99.99975%	≤ 0.00025%
U16	ISO 70 U	≥ 99.99999%	≤ 0.00001%	≥ 99.9999%	≤ 0.0001%
U17	ISO 75 U	≥ 99.999995%	≤ 0.000005%	≥ 99.9999%	≤ 0.0001%

Learn more about ISO 29463

Comparison of filter classes according to ISO 16890, ISO 29463 and ISO 29461

Filter classes according to ISO 29461	Filter groups	Test results according to ISO 29463	Test results according to ISO 16890
		Efficiency at MPPS	ePM_1,min	ePM_2,5,min	ePM₁₀	Initial gravimetric arrestance A₁₀₀
ISO T1	Coarse					20 % < A₁₀₀ < 50 %
ISO T2						≥ 50 %
ISO T3						≥ 70 %
ISO T4						≥ 85 %
ISO T5	ePM₁₀				≥ 50 %
ISO T6	ePM_2,5			≥ 50 %
ISO T7	ePM₁		≥ 50 %
ISO T8			≥ 70 %
ISO T9			≥ 85 %
ISO T10	EPA	≥ 85 %
ISO T11		≥ 95 %
ISO T12		≥ 99,5 %
ISO T13	HEPA	≥ 99,95 %

Learn more about ISO 29461

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