ASTM B821-92(1997) - 10.4.1997
 
1. Scope

1.1 This guide covers the dispersion in liquids of metal powders and related compounds for subsequent use in particle size analysis instruments. This guide describes a general procedure for achieving and determining dispersion; it also lists procedures that are currently in general use for certain materials.

1.2 This guide is limited to metal powders and related metal compounds. However, the general procedure described herein may be used, with caution as to its significance, for other particulate materials, such as ceramics, pigments, minerals, etc.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 This standard does not purport to address all of the safety problems, 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.

 
2. Referenced Documents

B822-25

Standard Test Method for Particle Size Distribution of Metal Powders and Related Compounds by Light Scattering

B430-97(2001)

Standard Test Method for Particle Size Distribution of Refractory Metal Powders and Related Compounds by Turbidimetry

B761-26

Standard Test Method for Particle Size Distribution of Metal Powders and Related Compounds by X-Ray Monitoring of Gravity Sedimentation

B243-26a

Standard Terminology of Powder Metallurgy (Includes all amendments and changes 6/8/2026).