Cleanroom Standards Guide for Data Centers
Introduction to the Cleanroom Standards Guide for Data Centers
Maintaining optimal air cleanliness is critical for the efficient operation of data centers. The table below provides a comprehensive overview of ISO Cleanroom Standards, highlighting the maximum allowable particle counts for each ISO class. These standards ensure that sensitive equipment remains protected from harmful contaminants, enhancing reliability and longevity.
ISO Class 8 is the most commonly adopted standard for data centers. It offers an ideal balance between maintaining cleanliness to safeguard critical infrastructure and managing operational costs effectively. Use the guide below to identify the most suitable standard for your facility’s requirements.
| ISO Class | Maximum Particles/m³ (≥0.1μm) | Maximum Particles/m³ (≥0.2μm) | Maximum Particles/m³ (≥0.3μm) | Maximum Particles/m³ (≥0.5μm) | Maximum Particles/m³ (≥1μm) | Maximum Particles/m³ (≥5μm) | FS 209E Equivalent |
|---|---|---|---|---|---|---|---|
| ISO 1 | 10 | 2 | 1 | 0 | – | – | Class 1 |
| ISO 2 | 100 | 24 | 10 | 4 | – | – | Class 10 |
| ISO 3 | 1,000 | 237 | 102 | 35 | 8 | 1 | Class 100 |
| ISO 4 | 10,000 | 2,370 | 1,020 | 352 | 83 | 10 | Class 1,000 |
| ISO 5 | 1,00,000 | 23,700 | 10,200 | 3,520 | 832 | 29 | Class 10,000 |
| ISO 6 | 10,00,000 | 2,37,000 | 1,02,000 | 35,200 | 8,320 | 293 | Class 1,00,000 |
| ISO 7 | – | – | – | 3,52,000 | 83,200 | 2,930 | Class 1,000,000 |
| ISO 8 | 35,20,000 | 8,32,000 | 2,93,000 | 29,300 | – | – | Class 10,000,000 |
| ISO 9 | 3,52,00,000 | 83,20,000 | 29,30,000 | 2,93,000 | – | – | – |