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PUBLICATIONS

Shape Factors of ISO 12103-A3 (Medium Test Dust)

Published

Author(s)

Robert A. Fletcher, David S. Bright

Abstract

A new derivative of Arizona sand, ISO Medium Test Dust, is coming into use as a liquid optical particle count calibrant. ISO Medium Test Dust and optical particle counters are used to test filtering efficiency. Particle shape plays a role in both filtering and optical detection. To establish a new Standard Reference Material for the fluid power industry, NIST performed scanning electron microscopy on large numbers of medium test dust particles over the size range of 0.5 um to 50 um. Aspect ratio, longest chord to projected area diameter ratio, and circularity have been derived from the boundaries of the SEM images.
Citation
Filtration and Separation
Volume
37
Issue
No. 9
Pub Type
Journals

Keywords

Arizona sand, ISO Medium Test Dust, shape factor
Chemistry and Nanotechnology

Citation

Fletcher, R. and Bright, D. (2000), Shape Factors of ISO 12103-A3 (Medium Test Dust), Filtration and Separation (Accessed October 13, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created November 1, 2000, Updated February 19, 2017
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