A new part of the ISO cleanroom series has been issued:
ISO 14644-14 links the cleanroom classifications found in the landmark ISO 14644-1:2015, Classification of air cleanliness by particle concentration to the suitability of equipment (e.g., machinery, measuring and process components and tools) for use in cleanrooms and associated controlled environments.
Before an assessment can be executed, the customer and supplier must agree upon the particle size range(s) designated by the relevant ISO Class given in ISO 14644-1 and the test item, including mode of operation.
The document provides both an assessment procedure and documentation requirements.Informative annexes provide an example including calculations regarding establishing reference to ISO 14644-1, Table 1 - ISO Classes of air cleanliness by particle concentration, as well as additional optional tests to obtain information regarding impact on processes and the adjacent environment.
Further details via Cleanroom Technology
Posted by Dr. Tim Sandle