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Technical & Practical

April 1, 2010

Particle Sizing Across the CPI

This survey of modern measurement technologies demonstrates how selection criteria vary by application

Remi Trottier, Shrikant Dhodapkar and Stewart Wood, The Dow Chemical Co.

Particulate systems are everywhere; they are responsible for bright red sunsets, the texture of chocolate and the rate of drug delivery in the human body. Particulate processing and size control originated back in prehistoric times where mixtures of pigments were finely pulverized and used in the painting of cavern walls. From those primitive beginnings, the use and processing of particulate matter has grown to be of paramount importance in virtually all modern industries. In an attempt to meet the challenge of these remarkably wide particle characterization requirements, from nanosize to millimeters, a considerable number of technologies have been developed over the years to measure the size of particles....

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