ISO 14644-11999 Cleanrooms and associated controlled environments - Part 1 Classification of air cleanliness

The International Organization for Standardization (ISO). First edition, 1999-05-01. 24p. This part of ISO 14644 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 0,1 m to 5 m are considered for classification purposes.