CLASSIFICATION OF FILTERS

CLASSIFICATION OF FILTERS BASED ON EUROVENT STANDARD
A) Coarse filter (G) and fine filter (F) Classification according to Eurovent BSEN-779-4/5 and BSEN- 779-4/9
CEN EN- 779-2002 standard. an Average eff. on 0.4 micron particle.
CEN – EN – 779 – 2002
BSEN – 779 – 4/5 		BSEN 779-4/9 std. EA<20% AverageArrertance EA<20% Average Eff. Filter Group
Pressure drop P
IPD-PI FPD-PF
3MM 15MM
3MM 15MM
4MM 20MM
5MM 20MM
6MM 25MM
7MM 25MM
7MM 25MM
6 to 10MM 40MM
6 to 10MM 40MM
Final Limit
p 250 Pa
”
”
”
p 450 Pa
”
”
”
”
G1 EU. 1 65% –  
G2 EU. 2 65 to 80% – Coarse Filter (G)
G3 EU. 3 80 to 90% –  
G4 EU. 4 90 to 95% –  
F5 EU. 5 95 to 97% 40 to 60% Fine Filter
F6 EU. 6 97 to 98% 60 to 80% (F)
F7 EU. 7 98 to 99% 80 to 90%  
F8 EU. 8 Semi HEPA 90 to 95% Very fine
F9 EU. 9 Super Semi HEPA 95 to 98% filter
 
B) Hepa (Absolute) filters classification based on Eurovent. 4/4 standard. / CEN – TC/195 Method by BSEN 1822 standard.
Sr. No. Eurovent Class Initial eff.

Ei%     % 		Penetration Rating BSEN-1822 Std.
Class           Efficiency		 Micron Filter Class
1 EU.10 95 to 99.9% 5>= P >0.1
H-10   85%
H-11   95%
H-12   99.5%
H-13   99.95%
H-14   99.995%
U-15   99.9995%
U-16   99.99995%
U-17   99.999995%
0.3 Hepa.
2 EU.11 99.9 to 99.97% 0.1 >= P > 0.03 0.3 Hepa.
3 EU.12 99.97 to 99.99% 0.03 >= P > 0.01 0.3 Hepa.
4 EU.13 99.99 to 99.999% 0.01 >= P >0.001 0.3 Hepa.
5 EU.14 99.999 to 99.9995% 0.001 >= P 0.3 Hepa.
6 U.15 99.9995 to 99.9999%   0.12 ULPA
7 U.16 99.9999 to 99.99999%   0.12 ULPA
8 U.17 99.99999 to 99.999995%   0.12 ULPA
 
A) Standard filter size and Air Flow rate of Hepa Filters.IPD – 6 to 10mm WG and FDP 40mm WG.
Sr. No. Filter Size
EU 10 to EU 14
CFM		 HEPA Filter

               CMH
PDp
IPD                               FPD 		EU 8 & EU 9 Semi Hepa Filter
CFM                              CMH 		PDp
IPD                            FPD
1 12″ X 12″ X 6″ 125                                213 25mm                   50mm 250                               425 6 to 10mm            40mm
2 24″ X 24 ” X 6″ 500                                850 ”                               ” 1000                             1670 ”                               ”
3 24″ X 30 ” X 6″ 625                              1050 ”                               ” 1200                              2000 ”                               ”
4 24″ X 36 ” X 6″ 750                               1275 ”                               ” 1500                              2500 ”                               ”
5 24″ X 48 ” X 6″ 1000                             1670 ”                               ” 2000                              3340 ”                               ”
6 24″ X 24 ” X 12 ” 1000                             1670 ”                               ” 2000                              3340 ”                               ”
7 20″ X 20 ” X 6″ 400                               670 ”                               ” 800                            1340 ”                               ”
8 20″ X 20 ” X 12 ” 800                              1340 ”                               ” 1600                              2680 ”                               ”
 
B) Standard Filter size and Air flow rate of Coarse and Fine Filter as per their micron size.
Sr. No. Filter Size EU – 3 Filter
CFM                   CMH 		EU – 4 Filter
CFM                   CMH 		EU – 5 to EU 9
CFM                   CMH
1 24″ X 24 ” X 12 ” –                         – 2700                   4500 2000                   3340
2 24″ X 24 ” X 9 ” 4000                   6700 2000                   3380 1500                   2500
3 24″ X 24 ” X 6″ 3400                   5600 1350                   2250 1000                   1670
4 24″ X 24 ” X 4″ 2250                   3750 1150                   1920 850                   1420
5 24″ X 24 ” X 2″ 1700                   2840 800                   1340 600                   1000
6 20″ X 20 ” X 12″ –                            – 2340                   3900 1800                   3000
7 20″ X 20 ” X 9″ 3300                   5500 1750                   2920 1350                   2250
8 20″ X 20 ” X 6″ 2250                   3760 1170                   1950 900                   1500
9 20″ X 20 ” X 4″ 1650                   2750 900                   1500 750                   1250
10 20″ X 20 ” X 2″ 1100                   1840 600                   1000 500                   840
11 20″ X 25 ” X 2″ 1400                   2422 700                   1170 550                   920
12 16″ X 25 ” X 2″ 1100                   1840 600                   1000 500                   840