Representation of results of particle size analysis Calculation of average particle sizes/diameters and moments from particle size distributions

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-05-2014

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions, symbols and abbreviated terms
4 The moment-notation
5 The moment-ratio-notation
6 Relationship between moment-notation and
  moment-ratio-notation
7 Accuracy of calculated particle size distribution
  parameters
Annex A (informative) - Numerical example for calculation
        of mean particle sizes and standard deviation
        from a histogram of a volume based size
        distribution
Annex B (informative) - Numerical example for calculation
        of mean particle sizes and standard deviation from
        a histogram of a volume based size distribution
Annex C (informative) - Accuracy of calculated particle size
        distribution parameters
Bibliography

Specifies relevant equations and coherent nomenclatures for the calculation of moments, mean particle sizes and standard deviations from a given particle size distribution.

This part of ISO9276 provides relevant equations and coherent nomenclatures for the calculation of moments, mean particle sizes and standard deviations from a given particle size distribution. Two notation systems in common use are described. One is the method of moments while the second describes the moment-ratio method. The size distribution may be available as a histogram or as an analytical function.

The equivalent diameter of a particle of any shape is taken as the size of that particle. Particle shape factors are not taken into account. It is essential that the measurement technique is stated in the report in view of the dependency of sizing results of measurement principle. Samples of particles measured are intended to be representative of the population of particles.

For both notation systems, numerical examples of the calculation of mean particle sizes and standard deviation from histogram data are presented in an annex.

The accuracy of the mean particle size may be reduced if an incomplete distribution is evaluated. The accuracy may also be reduced when very limited numbers of size classes are employed.

Committee	LBI/37
DevelopmentNote	Supersedes 97/123764 DC. (03/2005) Supersedes 12/30269757 DC. (05/2014)
DocumentType	Standard
Pages	38
PublisherName	British Standards Institution
Status	Current
Supersedes	BS ISO 9276-2:2001 BS ISO 9276-2:2001 97/123764 DC : JUL 97 12/30269757 DC : 0

Standards	Relationship
ISO 9276-2:2014	Identical

BS 8471:2007

Guide to particle sizing methods

ISO 9276-1:1998	Representation of results of particle size analysis — Part 1: Graphical representation
ISO 9276-3:2008	Representation of results of particle size analysis — Part 3: Adjustment of an experimental curve to a reference model
ISO 565:1990	Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings
ISO 9276-5:2005	Representation of results of particle size analysis Part 5: Methods of calculation relating to particle size analyses using logarithmic normal probability distribution
ISO 3534-1:2006	Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability

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BS ISO 9276-2:2014

Current

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referenced By This Book

Standards Referencing This Book

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