Draft ISO 14644-12 Cleanrooms and associated controlled environments

The draft international cleanroom standard ISO 14644, Part 12, is now available for public comment. The standard is titled ‘Classification of air cleanliness by nanoscale particle concentration’. The standard can be accessed through national standards bodies and comments need to be made by July 31, 2013.

Nanoscale refers to particles of the range 1 nm to 100 nm. This relates to microelectrics and to some healthcare products.

The standard has been developed following the removal of sections on ultrafine particles from ISO 14644 Parts 1 and 3. These sections have been incorporated, in modified form, in the new document ISO 14644-12.

The new standard relates to the other following standards:

• ISO 14644-3:2005 Cleanrooms and associated controlled environments -- Part 3: Test methods
• ISO 15900:2009 Determination of particle size distribution -- Differential electrical mobility analysis for aerosol particles
• ISO 21501-4:2007 Determination of particle size distribution -- Single particle light interaction methods – Part 4: Light scattering airborne particle counter for clean spaces ISO/TS 27687:2008 Nanotechnologies -- Terminology and definitions for nano-objects -- Nanoparticle, nanofibre and nanoplate
• ISO 27891 Aerosol particle number concentration -- Calibration of condensation particle number counters
• ISO/TS 80004-1:2010 Nanotechnologies -- Vocabulary -- Part 1: Core terms

Posted by Tim Sandle