: Clause B.7 (Installed Filter System Leakage Test) was simplified to eliminate errors and reduce excessive complexity.
The 2019 edition introduces new statistical methods (e.g., for interpreting particle count data). By 2021, most cleanroom training courses had updated their curricula. Verify that your validation staff understand:
The standard specifies recommended test procedures and apparatus for verifying air cleanliness and other performance parameters in cleanrooms. It covers both unidirectional and non-unidirectional airflow across three occupancy states: as-built, at-rest, and operational Key Updates in the Latest Edition iso 146443pdf 2021
| Activity | Frequency | Responsible Party | | :--- | :--- | :--- | | Cleanroom classification | Initial and when changes occur | Qualified internal staff or third-party | | Periodic testing (air pressure, airflow) | ≤ 12 months | Trained internal team or service provider | | Periodic testing (filter leak, recovery) | ≤ 24 months | Typically third-party for impartiality | | Daily monitoring of critical parameters | Continuous or daily | Facility management system / operators |
This measures how quickly a room can return to its specified cleanliness level after a contamination event (such as a door opening or heavy personnel activity). It is a direct benchmark of the HVAC system's efficiency. Segregation Testing: : Clause B
The document outlines several standardized procedures to ensure a cleanroom is fit for purpose. These are essential for cleanroom qualification (OQ/PQ) .
– The 2019 edition no longer includes the airborne particle count for classification as a test method within Part 3, as this is now exclusively covered by ISO 14644-1. This change clarifies the boundary between the two standards. Verify that your validation staff understand: The standard
highlighting the differences between the 2005 and current versions for a technical report?
The standard includes several annexes that provide additional information: