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GB/T 40401-2021Determination of density by volumetric displacement - Skeleton density by gas pycnometry (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

August 20, 2021

Implementation date

March 1, 2022

Scope

GB/T 40401-2021 (Determination of density by volumetric displacement - Skeleton density by gas pycnometry) is available as an English-translated PDF.

GB/T 40401-2021 is the Chinese standard "Determination of density by volumetric displacement - Skeleton density by gas pycnometry". Its scope clause reads: This document specifies a method to quickly and effectively determine the skeleton density of solid material samples with regular or irregular shapes by the gas densitometer method.

Degree methods include powder or whole single-piece samples. Its clauses include terms and definitions.

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Document preview — GB/T 40401-2021

National Standard of the People's Republic of China

Classification: A 28

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbol
5 Measuring principle
6 Measuring instruments and measuring procedures
7 Test report
Appendix A (Informative) Interference

1 Scope

This document specifies a method to quickly and effectively determine the skeleton density of solid material samples with regular or irregular shapes by the gas densitometer method.

Degree methods include powder or whole single-piece samples.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

ISO 9277 Gas adsorption BET method to determine the specific surface area of solid matter (Determination of the specific surface area of solidsbygasadsorption-BETmethod)

ISO 14488 Particle Sampling and Sample Separation Method for Determination of Particle Characteristics (Particulatematerials-Sampling andsamplesplittingforthedeterminationofparticulateproperties)

ISO 15901-3 Determination of pore size distribution and porosity of solid materials by mercury intrusion method and gas adsorption method Part 3.Analysis by gas adsorption method

Microporous (Poresizedistributionandporosityofsolidmaterialsbymercuryporosimetryandgasadsorp- tion-Part 3.Analysisofmicroporesbygasadsorption)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Density

The ratio of the mass of the sample to the volume occupied by the mass.

3.2 Truesolidstatedensity

The ratio of the mass of the sample to the volume of the dense solid framework of the sample, excluding open and closed pores, internal voids of particles, and coarse particles or height

The volume of the gap between the dispersed particles.

3.3 Skeleton density

The ratio of sample mass to sample volume, where the volume includes the volume of closed pores that may exist, but does not include the volume of open pores and bulk samples

The volume of the inter-particle gap.

3.4 Closedpore

A hole that is completely closed by the hole wall, does not communicate with other pores, and cannot enter any fluid. […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 9277 · ISO 14488 · ISO 15901

Cited by

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