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Comparison of cleanliness levels between ISO-14644 and equivalent standards in various countries is as follows
Comparison of cleanliness levels between ISO-14644 and equivalent standards in various countries is as follows:
Comparison of cleanliness levels between ISO-14644 and equivalent standards in various countries
|
International standard ISO-14644 |
Chinese standard |
American standard |
Russian standard |
Japanese standard |
German standard |
|
/ |
/ |
/ |
P0 |
/ |
/ |
|
1 |
1 |
/ |
P1 |
1 |
1 |
|
2 |
2 |
/ |
P2 |
2 |
2 |
|
3 |
3 |
M1.5 |
P3 |
3 |
3 |
|
4 |
4 |
M2.5 |
P4 |
4 |
4 |
|
5 |
5 |
M3.5 |
P5 |
5 |
5 |
|
6 |
6 |
M4.5 |
P6 |
6 |
6 |
|
7 |
7 |
M5.5 |
P7 |
7 |
7 |
|
8 |
8 |
M6.5 |
P8 |
8 |
8 |