ISO 14644-9, Cleanrooms and associate controlled environments - Part 9: Classification of surface particle cleanliness, is currently a Committee Draft and is not yet available as a Standard.

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.

See also

• ISO 14644
  ISO 14644
  ISO 14644 Standards were first formed from the US Federal Standard 209E Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones. The need for a single standard for cleanroom classification and testing was long felt...
  
  - standard for Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones