ISO Classifications
Browse our product range by ISO standard:
About ISO Classifications
There are two primary standards to which cleanrooms are classified to; FED STD 209E in which categorise the number of particles of size 0.5 μm or larger permitted per cubic foot of air and ISO 14644-1 which categorise the number of particles 0.1 μm or larger permitted per m3 of air.
At Integrity Cleanroom, we classify our products using the ISO 14644-1 standard. The table below highlights the differences between the cleanroom standards:
| ISO Class |
FED STD |
maximum particles/m3 | |||||
|---|---|---|---|---|---|---|---|
| ≥0.1 μm | ≥0.2 μm | ≥0.3 μm | ≥0.5 μm | ≥1 μm | ≥5 μm | ||
| ISO 1 | 10 | 2.37 | 1.02 | 0.35 | 00.83 | 0.0029 | |
| ISO 2 | 100 | 23.7 | 10.2 | 3.5 | 0.83 | 0.029 | |
| ISO 3 | Class 1 | 1,000 | 237 | 102 | 35 | 8.3 | 0.29 |
| ISO 4 | Class 10 | 10,000 | 2,370 | 1,020 | 352 | 83 | 2.9 |
| ISO 5 | Class 100 | 100,000 | 23,700 | 10,200 | 3,520 | 832 | 29 |
| ISO 6 | Class 1,000 | 1.0×106 | 237,000 | 102,000 | 35,200 | 8,320 | 293 |
| ISO 7 | Class 10,000 | 1.0×107 | 2.37×106 | 1,020,000 | 352,000 | 83,200 | 2,930 |
| ISO 8 | Class 100,000 | 1.0×108 | 2.37×107 | 1.02×107 | 3,520,000 | 832,000 | 29,300 |
| ISO 9 | Room air | 1.0×109 | 2.37×108 | 1.02×108 | 35,200,000 | 8,320,000 | 293,000 |