This ISO document describes the classification of the particle contamination levels on solid surfaces in cleanrooms and associated controlled environments applications. Recommendations on testing and measuring methods as well as information about surface characteristics are given in informative annexes.
- ISO 14644 - standard for Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones
- "ISO 14644-9 Scope". IEST. 2007-12-03. Retrieved 2008-01-17.