DS/ISO 13320:2020

Particle size analysis – Laser diffraction methods


Status:
Current
Type:
Standard
Language:
English
Subject:
Price from:
€ 104.69

Scope

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 �m to 3 mm. With special instrumentation and conditions, the applicable size range can be extended above 3 mm and below 0,1 �m.
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).


Number of pages: 68

Published: 2020-01-13

Date of approval: 2020-01-13

International relationships : ISO 13320:2020 IDT

ICS: 19.120 - Particle size analysis. Sieving

Item number: M323265


Committees

Committee

  • ISO/TC 24/SC 4
  • ISO/TC 24/SC 4/WG 6

Danish committee

DS/S-438