FED-STD-209E
FED-STD-209E was a United States federal standard that defined the requirements for the cleanliness of air in cleanrooms and associated controlled environments. The standard was first issued in 1963 and underwent several revisions, with the "E" version being published in 1990. FED-STD-209E was widely recognized and used in industries requiring controlled environments, such as biotechnology, pharmaceuticals, and semiconductor manufacturing, until it was superseded by international standards.
Overview[edit | edit source]
FED-STD-209E specified the levels of air cleanliness in terms of the number of particles, of a specified particle size, per cubic foot of air. The standard categorized cleanrooms into different classes based on the concentration of particles. The most common classes under this standard were Class 100, Class 1,000, Class 10,000, and Class 100,000, where the class number refers to the maximum allowable number of particles (0.5 micrometers or larger) per cubic foot of air.
Transition to ISO Standards[edit | edit source]
In the late 1990s, the International Organization for Standardization (ISO) developed a series of cleanroom standards known as ISO 14644. These standards were adopted globally and began to replace national standards, including FED-STD-209E. ISO 14644-1, in particular, specifies air cleanliness in terms of the number of particles per cubic meter, which is a departure from the cubic foot measurement used in FED-STD-209E. The transition to ISO standards was completed when the General Services Administration (GSA) officially withdrew FED-STD-209E in 2001.
Impact and Legacy[edit | edit source]
Despite its withdrawal, FED-STD-209E had a significant impact on the development and implementation of cleanroom technology. It established a framework for classifying cleanroom cleanliness that facilitated communication and standardization across different industries. The transition to ISO standards has allowed for a more consistent and universally accepted set of criteria for cleanroom classification, but the legacy of FED-STD-209E remains in the foundational concepts it established.
See Also[edit | edit source]
| FED-STD-209E Resources | |
|---|---|
|
 |
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
|
WikiMD's Wellness Encyclopedia |
| Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD
