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E-mail
13526877955@139.com
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Phone
13526877955
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Address
1-818 Xinyuan Duhui Plaza, Daxue South Road, Zhengzhou City
Zhengzhou Junda Instrument Co., Ltd
13526877955@139.com
13526877955
1-818 Xinyuan Duhui Plaza, Daxue South Road, Zhengzhou City
Cleanliness level standard
ISO 14644Classify the air cleanliness level in clean rooms (zones) and related controlled environments based on the concentration of suspended particles, and only consider the particle size limit (lower limit)0.1um～5.0umA particle swarm with cumulative distribution within the range.
According to particle size, it can be divided into regular particles（0.1um～5.0um）Ultra fine particles (＜)0.1um）And macro particles (>5.0um）.
Classification standards for air cleanliness:ISO14644-1(Standard)
| Air cleanliness level（N） | Maximum concentration limit for particles larger than or equal to the specified particle size (individual)/Particles per cubic meter of air | |||||
| 0.1 um | 0.2 um | 0.3 um | 0.5um | 1um | 5 um | |
| ISO Class 1 | 10 | 2 |
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| ISO Class 2 | 100 | 24 | 10 | 4 | ||
| ISO Class 3 | 1 000 | 237 | 102 | 35 | 8 | |
| ISO Class 4 | 10 000 | 2 370 | 1 020 | 352 | 83 | |
| ISO Class 5 | 100 000 | 23 700 | 10 200 | 3 520 | 832 | 29 |
| ISO Class 6 | 1 000 000 | 237 000 | 102 000 | 35 200 | 8 320 | 293 |
| ISO Class 7 |
| 352 000 | 83 200 | 2 930 | ||
| ISO Class 8 |
| 3 520 000 | 832 000 | 29 300 | ||
| ISO Class 9 |
| 35 200 000 | 8 320 000 | 293 000 | ||
| Note: Due to the uncertainty involved in the measurement process, it is required to use no more than three valid concentration numbers to determine the level. | ||||||
Classification standards for air cleanliness:GB/T16292-1996(Chinese Standard)
| Particle size, numerical cleanliness level | Maximum allowable number of dust particles/cubic meter | Maximum allowable number of microorganisms | ||
| ≥0.5um | ≥5um | airborne microbe/cubic meter | settling microorganism/dish | |
| 100 level | 3,500 | 0 | 5 | 1 |
| 10,000level | 350,000 | 2,000 | 100 | 3 |
| 100,000level | 3,500,000 | 20,000 | 500 | 10 |
| 300,000level | 10,500,000 | 60,000 | — | 15 |
the United Kingdom 5295 Classification of Standard Cleanrooms and Air Purification Devices:
| Air cleanliness level（N） | Maximum concentration limit for particles larger than or equal to the specified particle size (individual)/Particles per cubic meter of air | ||||
| 0.3um | 0.5um | 5um | 10um | 25 um | |
| C | 100 | 35 | 0 |
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| D | 1000 | 350 | 0 | ||
| E | 10000 | 3500 | 0 | ||
| F |
| 3500 | 0 | ||
| G | 100000 | 35000 | 200 | 0 | |
| H |
| 35000 | 200 | 0 | |
| J |
| 350000 | 2000 | 450 | 0 |
| K |
| 3500000 | 20000 | 4500 | 500 |
| L |
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| 200000 | 45000 | 5000 |
| M |
| 450000 | 50000 | ||
Comparison of various standards:
| U.S. federal | U.S. federal | British Standard | Australian Standards | French standards | German Standard | standard | Japanese standards |
| standard 209D | standard 209E | BS5295 | AS1386 | AFNORX44101 | VDI2083 | 14644-1 | JACA24 |
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| 1 | 1 |
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| — | 0 | 2 | 2 |
| 1 | M1.5 | C | 0.035 | — | 1 | 3 | 3 |
| 10 | M2.5 | D | 0.35 | — | 2 | 4 | 4 |
| 100 | M3.5 | E | 3.5 | 4000 | 3 | 5 | 5 |
| 1000 | M4.5 | G | 35 | — | 4 | 6 | 6 |
| 10000 | M5.5 | J | 350 | 400000 | 5 | 7 | 7 |
| 100000 | M6.5 | K | 3500 | 4000000 | 6 | 8 | 8 |
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| M |
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| 7 | 9 | — |