Federal Standard 209E for Cleanroom - An Obsolete …

Federal Standard 209E FOR Cleanroom - AN Obsolete DOCUMENT! By Ir Liew Huey Chyan, , APEC Eng, ASEAN Eng, , , , ABSTRACT. The United States ( ) Federal Standard 209 (FS 209) was published by the Institute of Environmental Sciences and Technology (IEST), FS 209 was approved for use by the General Services Administration (GSA) in 1963, making it obligatory for organizations doing work for the United States government. FS 209 has been used widely as the de facto clean room Standard in and around the world including in Malaysia, some countries completely adopted FS.

standard in and around the world including in Malaysia, some countries completely adopted FS 209, while others made their own national version, similar to FS 209. Some made minor changes of the classes to comply with the metric system. Australia (AS 1386), France (AFNOR

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