FED-STD-209 E Airborne Particulate Cleanliness Classes in Cleanrooms and Cleanzones was a federal standard concerning classification of air cleanliness, intended for use in environments like cleanrooms. The standard based its classifications on the measurement of airborne particles.
Cancellation The standard was canceled on November 29, 2001 by the United States General Services Administration (GSA). The document was superseded by standards written for the International Organization for Standardization (ISO).
References
External links Institute of Environmental Sciences and Technology Critical Distinctions Between Clean Room Carts and Laboratory Carts Archived 2018-09-01 at the Wayback Machine ISO 14644-1 Cleanroom Classifications