GB 6944-1986
Replaced
GB/T 21779-2008
Active
National standards
GB/T 21779-2008 Test method for particle size distribution of metal powders and related compounds by light scattering
GB/T 21779-2008 Test method for particle size distribution of metal powders and related compounds by light scattering
Basic Information
Standard Code:
GB/T 21779-2008
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:
2008-05-12
Implement Date:
2008-09-01
Pages:
6 pages
Scope
This method is suitable for determining the particle size distribution of granular substances such as metals and compounds by light scattering, and the results are expressed as a percentage of volume. This method is suitable for analyzing samples dispersed in water and non-water, and is also suitable for analyzing gas-dispersed samples of hygroscopic substances or substances that may react with liquid carriers. This method is suitable for determining the particle size distribution of substances with a particle size of 0.4 μm to 2,000 μm. The standard unit of measurement for this method is SI units.
Development Information
Referenced Standards
ISO 13320-1
ASTM B 215
ASTM B 243
ASTM B 821
ASTM E 1617
Adopt standards
ASTM B 822:2002
Related Standards
GB/T 7694-1987
Replaced
GB/T 7694-1987 The rule of nomenclature for dangerous goods
GB 11806-1989
Abolished
GB 11806-1989 Regulations for the safe transport of radioactive material
GB 11928-1989
Active
GB 11928-1989 Regulations for interim storage of low-and intermediate-level radioactive solid wastes
GB 11929-1989
Replaced
GB 11929-1989 Regulations for designing storage building of high level radioactive liquid waste
GB 12268-1990
Replaced