Table 1.
Class name | Class limits | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
≥0.1 µm | ≥0.2 µm | ≥0.3 µm | ≥0.5 µm | ≥5 µm | |||||||
SI | English | m3 | ft3 | m3 | ft3 | m3 | ft3 | m3 | ft3 | m3 | ft3 |
M1 | 350 | 9.91 | 75.7 | 2.14 | 30.9 | 0.875 | 10.0 | 0.283 | |||
M1.5 | 1 | 1,240 | 35 | 265 | 7.50 | 106 | 3.00 | 35.3 | 1.00 | ||
M2 | 3,500 | 99.1 | 757 | 21.4 | 309 | 8.75 | 100 | 2.83 | |||
M2.5 | 10 | 12,400 | 350 | 2,650 | 75.0 | 1,060 | 30.0 | 353 | 10.0 | ||
M3 | 35,000 | 991 | 7,570 | 214 | 3,090 | 87.5 | 1,000 | 28.3 | |||
M3.5 | 100 | 26,500 | 750 | 10,600 | 300 | 3,530 | 100 | ||||
M4 | 75,700 | 2,140 | 30,900 | 875 | 10,000 | 283 | |||||
M4.5 | 1,000 | 35,300 | 1,000 | 247 | 7.00 | ||||||
M5 | 100,000 | 2,830 | 618 | 17.5 | |||||||
M5.5 | 10,000 | 353,000 | 10,000 | 2,470 | 70.0 | ||||||
M6 | 1,000,000 | 28,300 | 6,180 | 175 | |||||||
M6.5 | 100,000 | 3,350,000 | 100,000 | 24,700 | 700 | ||||||
M7 | 10,000,000 | 283,000 | 61,800 | 1,750 |