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The air change rate of an iso cleanroom usually depends on the class and purpose of the cleanroom. According to the international standard ISO 14644-1, the air change rate of A CleanRoom may vary:
ISO5
The air change rate can reach more than 100 times per hour.
iso6
The air change rate is usually between 35 and 70 times per hour.
iso7
The air change rate is usually between 20 and 40 times per hour.
ISO8
The air change rate is usually between 10 and 20 times per hour.
The specific air change rate is also affected by factors such as the design, purpose of use and equipment requirements of the cleanroom. When designing and operating a cleanroom, the optimal air change frequency is usually determined based on actual needs and relevant standards.
