VitraPOR® glassfilters are divided into different porosity classifications ranging from below 1,0 up to over 500 microns. Therefore they are suitable for many filtration applications. Next to the DIN/ISO 4793 specifications, we listed the ASTM and BS descriptions:
Vitra POR® Filter - Porosity classifications
Class Description ISO/4793 Poresize (µm)
00
P 500
250 - 500
0
P250
160 - 250
1
P160
100 - 160
2
P100
40 - 100
3
P 40
16 - 40
4
P 16
10 - 16
5
P 1,6
1,0 - 1,6
Class Description ASTM/BS Poresize (µm)
EC
Extra Coarse
170 - 220
C
Coarse
40 - 60
M
Medium
10 - 16
F (BS)
Fine (BS)
4 - 10
F (ASTM)
Fine (ASTM)
4 - 5,5
VF
Very Fine
2 - 2,5
UF
Ultra Fine
0,9 - 1,4