GB/T 21779-2025 Active National standards

GB/T 21779-2025 Test method for particle size distribution of metal powders andrelated compounds by light scattering

GB/T 21779-2025 Test method for particle size distribution of metal powders andrelated compounds by light scattering

Publish Date: 2025-08-29 Implement Date: 2025-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21779-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Logo, packaging, transportation, storage

ICS Name: \nProtection against dangerous goods

Publish Date: 2025-08-29

Implement Date: 2025-12-01

Pages: 12 pages

Scope

This document establishes the principle of measuring the particle size distribution of metallic and related compounds, as well as other particulate substances, using light scattering. It specifies the instruments, reagents, and materials used in the test, as well as the requirements for the test procedures and report content.
This document is applicable to measuring the particle size distribution of metals and related compounds with a particle size range of 0.4 μm to 2000 μm using light scattering.

Development Information

Word Count: 12 Thousand words Pages: 12 pages

Replace the following standards

GB/T 21779-2008 Test method for particle size distribution of metal powders and related compounds by light scattering

Referenced Standards

GB/T 5314-1985 Powders for powder metallurgical purposes—Sampling GB/T 5314-2011 Powders for powder metallurgical purposes—Sampling GB/T 19077-2016 Particle size analysis—Laser diffraction methods GB/T 19077-2024 Particle size analysis—Laser diffraction methods GB/T 19077.1-2003 Particle size analysis—Laser diffraction method GB/T 19077.1-2008 Particle size analysis—Laser diffraction methods—Part 1:General principles

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