Particle sizing: A quick look at new and improved methods
Particle sizing methods have evolved rapidly over the past 15 years. This evolution has led to some new technologies and major improvements in the existing methods, and some of the methods have expanded into new application areas. This article provides an up-to-the-minute summary of recent particle sizing developments.
Arecent search of the American Society for Testing and Materials [ASTM] database discovered more than 140 particle sizing methods, many of them unheard of just a few years ago.1 New methods constantly evolve, and one by-product of that evolution is that more and more sizing methods can be applied both in the lab and at or in the process line. [Editor's note: For more information about how the methods work, see the author's previous Powder and Bulk Engineering articles on particle sizing, listed in references 2 and 3.]