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Filtertechnik
1 Central Park, Lenton Lane, Nottingham, NG7 2NR
Registered in England No: 03969985 VAT No: 760 821 731
Certification No. UK002838
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Particle Count ISO Codes
ISO Codes (ISO4406)
The table below shows the ISO 4406 codes by number of particles per 1 ml of fluid sampled.
ISO 4406 Code
Counts/mL
Greater than
Up to/including
0
0
0.01
1
0.01
0.02
2
0.02
0.04
3
0.04
0.08
4
0.08
0.16
5
0.16
0.32
6
0.32
0.64
7
0.64
1.3
8
1.3
2.5
9
2.5
5
10
5
10
11
10
20
12
20
40
13
40
80
14
80
160
15
160
320
16
320
640
17
640
1300
18
1300
2500
19
2500
5000
20
5000
10000
21
10000
20000
22
20000
40000
23
40000
80000
24
80000
160000
25
160000
320000
26
320000
640000
27
640000
1300000
28
1300000
2500000
29
2500000
∞