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1.1 This test method covers the determination of particle size distribution of refractory metal powders with a turbidimeter
1.1.1 As the powder is supplied (as-supplied), and
1.1.2 After the powder has been de-agglomerated by rod milling (laboratory milled) according to Practice B 859.
1.2 Where dual units are given, inch-pound units are to be regarded as standard.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B330 Test Method for Fisher Number of Metal Powders and Related Compounds
B821 Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
B859 Practice for De-Agglomeration of Refractory Metal Powders and Their Compounds Prior to Particle Size Analysis
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method