ISO/TC 209
Clean room and Associated Controlled Environments

Standardization of equipment, facilities, and operational methods for cleanrooms and associated controlled environments. This includes procedural limits, operational limits and testing procedures to achieve desired attributes to minimize micro contamination. Topics of interest are non-viable particles, viable particles, surface cleanliness, room temperature and humidity profiles, airflow patterns and velocities, room vibration profiles, room light levels, room infiltration leakage, personnel procedures, personnel cleanroom clothing, equipment preparation, and any other topics related to optimizing cleanroom operations.

For additional information please visit
ISO - International Organization for Standardization

U.S. General Services Administration
Adopt new ISO Standard  


The U.S. General Services Administration (GSA) officially announced that Federal Standard 209E, Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones, has been canceled and is superseded by ISO Standards for cleanrooms and associated controlled environments, ISO14644-1 Classification of air cleanliness and ISO 14644-2 Specifications for testing and monitoring to prove continued compliance with ISO 14644-1. The GSA action was the result of a recommendation made by IEST Working Group CC-100 to “sunset” Federal Standard 209E in favor of the ISO documents.

Please visit U.S. General Services Administration and
ISO - International Organization for Standardization
additional information please visit

Contact us today at 408.842.2400 to learn more about how Flowstar Corporation can help you with your cleanroom needs.