ISO 14644-3:2019 serves as the current international standard for defining test methods to evaluate the performance of cleanrooms and clean zones. The standard establishes critical testing procedures for airflow, filter leakage, and environmental factors across as-built, at-rest, and operational occupancy states. For more information, visit ISO Store.

For official access, the standard can be purchased or viewed through authorized distributors like Accuris Standards Store or Intertek Inform. ISO 14644-3

Published: 2021

. This standard provides the "how-to" for validating that a cleanroom’s mechanical systems—from filters to airflow—are functioning as designed. The Heart of the Standard: Key Test Methods