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ISO 13320:2020

Current

Current

The latest, up-to-date edition.

Particle size analysis — Laser diffraction methods

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

06-01-2020

This document provides guidance on instrument qualification and size distribution measurement of particles in many two-phase systems (e.g. powders, sprays, aerosols, suspensions, emulsions and gas bubbles in liquids) through the analysis of their light-scattering properties. It does not address the specific requirements of particle size measurement of specific materials.

This document is applicable to particle sizes ranging from approximately 0,1 µm to 3 mm. With special instrumentation and conditions, the applicable size range can be extended above 3 mm and below 0,1 µm.

For spherical and non-spherical particles, a size distribution is reported, where the predicted scattering pattern for the volumetric sum of spherical particles matches the measured scattering pattern. This is because the technique assumes a spherical particle shape in its optical model. For non-spherical particles the resulting particle size distribution is different from that obtained by methods based on other physical principles (e.g. sedimentation, sieving).

Committee
ISO/TC 24/SC 4
DocumentType
Standard
Pages
59
PublisherName
International Organization for Standardization
Status
Current
Supersedes

Standards Relationship
BS ISO 13320:2020 Identical
JIS Z 8825:2022 Identical
IS 101 : Part 10 : Sec 1 : 2022 Identical
NEN-ISO 13320:2020 Identical

IS 4879 : 2023 Particulate Materials - Sampling and Sample Splitting Technique

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