BYU Home page BRIGHAM YOUNG UNIVERSITY  
Search the Cleanroom:
Home   |   Contact   |   Site Map
Navigation Menu




Cleanroom Classification

How cleanrooms are classified:

Two standards are used to classify cleanrooms. The first, Federal Standard 209E, is used domestically and the newer standard is TC 209 from the International Standards Organization. Both standards classify a cleanroom by the number of particles found in the laboratory’s air. Since the BYU IML lab is a class 10 cleanroom by the Federal Standards, there are less than 10 particles per cubic foot. The following chart relates FS to ISO classifications:
Federal Standard ISO
1
2
1 3
10 4
100 5
1,000 6
10,000 7
100,000 8
9

The following graph shows particle size vs. particles per cubic foot for various cleanroom classes:


Maintained by ECEn IMMERSE Web Team.
Copyright © 1994-2009. Brigham Young University. All Rights Reserved.