GB/T 21779-2025

Active

Test method for particle size distribution of metal powders and related compounds by light scattering

金属粉末和相关化合物粒度分布的光散射试验方法

Standard Type

GBT

ICS

13.300

CCS

A80

Status

现行

Issue Date

2025-08-29

Implementation

2025-12-01

Responsible Dept

国家标准委

Drafting Unit

N/A

🔗 Related Standards / 同类标准

GB/T 31516-2015 Classification method for the hazardous characterisitics of phthalic anhydride GB/T 31514-2015 Classification method for the hazardous characterisitics of tetrahydrophthalic acid anhydride GB/T 32374-2015 Phrase and codification of chemical hazard statements GB/T 34714-2017 Comprehensibility testing methodology for GHS labelling and safety data sheets of chemical GB/T 34713-2017 Chemicals—Validation process and principles of alternative methods for in vitro toxicological testing GB/T 34711-2017 Testing method for classification of chemically unstable gases GB/T 34708-2017 General principles for risk assessment of chemicals GB/T 35527-2017 Chemicals—Bioaccumulation in sediment-dwelling benthic oligochaetes