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- W2181356840 abstract "The new ISO Documents, viz, 14644 Parts 1 and 2 have already been officially released by the Technical Committee ISO/TC 209 : Cleanrooms and Associated Controlled Environments . Recently with the official cancellation of the Federal Standard 209E, more and more companies and associations will be adopting these standards for the classification of airborne cleanliness classes (ISO 14644-1) and using the second part ISO 14644-2 to specify monitoring protocol (or re-certification of cleanrooms) based on the cleanliness classes . This paper outlines the main differences between the ISO 14644-1 and the Federal Standard 209E and also explains briefly on the relevant tables and the recommended monitoring or recertification protocol of ISO 14644-2 . Scope of ISO Documents 14644 Parts 1 and 2 A. ISO 14644-1 : Classification of Air Cleanliness ISO 14644-1 covers the classification of air cleanliness in cleanrooms and associated controlled environments exclusively in terms of concentration of airborne particles . Only particle populations having cumulative distributions based on threshold (lower limit) sizes ranging from 0. lµm to 5µm. are considered for classification purposes . See Table 1 below for the cleanliness classification ." @default.
- W2181356840 created "2016-06-24" @default.
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- W2181356840 date "2002-01-01" @default.
- W2181356840 modified "2023-09-27" @default.
- W2181356840 title "Technical Bulletin Brief Explanation of ISO 14644 - Parts 1 & 2" @default.
- W2181356840 hasPublicationYear "2002" @default.
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