ISO 14644-2
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ISO 14644-2, Cleanrooms and associated controlled environments-Part 2: Specifications for testing and monitoring to prove continued compliance with ISO 14644-1 became an International Standard following the cancellation of FED-STD-209E. In the United States in 2000 it was adopted as ANSI/ IEST/ISO 14644-2:2000.[1]
This part of ISO 14644 specifies requirements for periodic testing of a cleanroom or clean zone to prove its continued compliance with ISO 14644-1 for the designated classification of airborne particulate cleanliness. It also specifies requirements for the monitoring of a cleanroom or clean zone (installation) to provide evidence of its continued compliance with ISO 14644-1 for the designated classification of airborne particulate cleanliness.[1]