How to use dry sieving tests — Part I
Because the particle size distribution of a dry material can affect process consistency and product quality, accurate particle size measurement is usually a primary concern. A correctly performed dry sieving test is one way to accurately measure a material's particle size distribution.
Part I of this article, the first of two, discusses how to sample the material for testing and divide the sample. Part II, which will appear in the August issue, discusses how to machine-sieve the sample and analyze the results. The information on sampling, sample division, and results analysis can also be applied to other methods of particle size measurement, such as laser scanning, light obscuration, and electric zone sensing.