ASTM D5644-01

1.1 These test methods describe the procedures for determining average particle size distribution of recycled vulcanizate particulate.

1.2 Method A describes the Ro-tap sieve test method for 60 mesh or coarser particles.

1.3 Method B describes the ultrasonic technique combined with optical microscope especially suitable for 80 mesh or finer particles. This procedure is based on Test Method D 3849.

1.4 The values stated in SI units are to be regarded as the standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.