ASTM D1921 Particle Size (Sieve Analysis) of Plastic Materials
ASTM D1921 test method deals with the particle size of plastic materials in the powdered, granular, or pelletized forms. It utilizes dry sieving, with a lower limit of measurement to be 38 µm. Multiple and specific sieves are selected for test methods A and B, and the distribution of the particle diameter and size are determined. SI units are considered to be standard.... Read More
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