Standard IEST-STD-CC1246

Cleanroom Cleanliness

IEST-STD-CC1246D is a standard published by the Institute of Environmental Sciences and Technology (IEST) which relates to product cleanliness levels and contamination control. The standard defines terminology used in cleanliness determination and sets upper limits for a number of cleanliness levels. The standard cleanliness levels described are Levels 1, 5, 10, 25, 50, 100, 200, 300, 500, 750, and 1000. It also allows the use of sub-divisions within the levels of the measurement of a sub-group of particles as long as the alternate method is properly identified in terms of what and how it was measured and what are acceptable limits. Compliance to this method is entirely voluntary.

One of the most common applications of this method is to classify the air cleanliness of clean rooms and other controlled environments by looking at witness plates (usually small wafer) left out in various locations.

Image analysis, as it relates to IEST-STD-CC1246D is concerned with detecting particles on a surface using an optical microscope and reporting the data as a function of the limits defined by the standard. Clemex PSFilter includes standard test methods and report templates which comply with the requirements of IEST-STD-CC1246D for looking at a single sample or 2 samples at a time.

To purchase a copy of standard description IEST-STD-CC1246D, please visit the IEST web site at http://www.iest.org.

For more information on the IEST-STD-CC1246D compliant instrument, Clemex PSFilter, visit our product page, brochure or contact a sales representative.