Class | >0.1 um | >0.2 um | >0.3 um | >0.5 um | >5 um | ISO equivalent |
---|---|---|---|---|---|---|
1 | 35 | 7 | 3 | 1 | ISO3 | |
10 | 350 | 75 | 30 | 10 | ISO4 | |
100 | 100 | ISO5 | ||||
1000 | 1000 | 7 | ISO6 | |||
10,000 | 10,000 | 70 | ISO7 | |||
100,000 | 100,000 | 700 | ISO8 |
Class | >0.1 um | >0.2 um | >0.3 um | >0.5 um | >1 um | >5 um | FED STD 209E equivalent |
---|---|---|---|---|---|---|---|
ISO 1 | 10 | 2 | |||||
ISO 2 | 100 | 24 | 10 | 4 | |||
ISO 3 | 1,000 | 237 | 102 | 35 | 8 | Class 1 | |
ISO 4 | 10,000 | 2,370 | 1,020 | 352 | 83 | Class 10 | |
ISO 5 | 100,000 | 23,700 | 10,200 | 3,520 | 832 | 29 | Class 100 |
ISO 6 | 1,000,000 | 237,000 | 102,000 | 35,200 | 8,320 | 293 | Class 1,000 |
ISO 7 | 352,000 | 83,200 | 2,930 | Class 10,000 | |||
ISO 8 | 3,520,000 | 832,000 | 29,300 | Class 100,000 | |||
ISO 9 | 35,200,000 | 8,320,000 | 293,000 | Room Air |
Grade | At Rest >0.5 um/M³ | At Rest >5um/M³ | Operational >0.5um/M³ | Operational >0.5um/M³ | Equivalent ISO at rest/operational | Equivalent Fed209E at rest / operational |
---|---|---|---|---|---|---|
A | 3,520 | 20 | 3,520 | 20 | ISO-5/5 | 100/100 |
B | 3,520 | 29 | 352,000 | 2,900 | ISO-5/7 | 100/10k |
C | 352,000 | 2,900 | 3,520,000 | 29,000 | ISO-7/8 | 10k/100k |
D | 3,520,000 | 29,000 | not defined | not defined | ISO-8/na | 100k/na |