ASTM B821-22
Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
- Standard No.
- ASTM B821-22
- Release Date
- 2022
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM B821-23
- Latest
- ASTM B821-23
- 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 have been found useful for certain materials. 1.2 This guide does not include specific procedures for dry dispersion of particulate materials. It only indicates when liquid dispersion is not appropriate and dry dispersion must be utilized (see 7.1.2.1). For guidance on development of methods of dry dispersion, see Guide E3340. 1.3 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. 1.4 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM B821-22 Referenced Document
- ASTM B215 Standard Practices for Sampling Finished Lots of Metal Powders
- ASTM B243 Standard Terminology of Powder Metallurgy*， 2023-05-01 Update
- ASTM B761 Standard Test Method for Particle Size Distribution of Powders and Related Compounds by X-Ray Monitoring of Gravity Sedimentation
- ASTM B822 Standard Test Method for Particle Size Distribution of Metal Powders and Related Compounds by Light Scattering
- ASTM E3340 Standard Guide for Development of Laser Diffraction Particle Size Analysis Methods for Powder Materials
ASTM B821-22 history
- 2023 ASTM B821-23 Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
- 2022 ASTM B821-22 Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
- 2010 ASTM B821-10(2016) Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
- 2010 ASTM B821-10 Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
- 2002 ASTM B821-02(2007) Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
- 2002 ASTM B821-02 Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
- 1992 ASTM B821-92(1997) Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
