ASTM D 4570 - 02 (Reapproved 2017) Standard Test Method for Rubber Chemicals - Determination of Particle Size of Sulfur by Sieving (Dry)

Current edition approved Feb. 1, 2017. Published February 2017. Originally approved in 1986. Last previous edition approved in 2012 as D4570 – 02 (2012). — 2 p.
This test method covers the particle size measurement of the coarse fraction of ground sulfurs. It is limited to measurement of particles greater than 45 μm (No. 325 sieve). If the sulfur is very fine and the screens become plugged by the caking of the sulfur, it may be necessary to use a wet sieve procedure instead.