The first version of ISO 14644 is similar to the 1999 U.S. Federal Standard 209E Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones standard. The federal standard was discontinued in 2001 and superseded by ISO 14644. ISO 14644 evolves with industries. In 2001, this standard ...
of the standard and typically requires 2 days for the onsite audit and reporting for a medium-sized factory with 50 – 300 employees. Additional checkpoints or requirements, such as elements of ISO 14644 (cleanrooms and associated controlled environments) or sterilization processes can be supported...