BS ISO 13320:2020 - Particle size analysis. Laser diffraction methods

BS ISO 13320:2020

Particle size analysis. Laser diffraction methods

Status : Current   Published : July 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).

Standard NumberBS ISO 13320:2020
TitleParticle size analysis. Laser diffraction methods
Publication Date28 July 2020
Normative References(Required to achieve compliance to this standard)ISO 9276-2, ISO 9276-1
Informative References(Provided for Information)ISO 8130-13, ISO 26824, ISO Guide 31, ISO 3534-2, ISO 24235, ISO/IEC Guide 99, IEC 60825-1, ISO 80000-7, ISO Guide 35, ISO 14488, ISO 17034, ISO/IEC 17025, ISO 14887
ReplacesBS ISO 13320:2009
International RelationshipsISO 13320:2020
Draft Superseded By19/30333249 DC
DescriptorsAccuracy, Optical measurement, Absorption (waves), Bubbles, Aerosols, Specimen preparation, Error detection, Calibration, Environment (working), Angles (geometry), Size measurement, Inspection, Particle size distribution, Verification, Emulsions, Lasers, Size, Suspensions (chemical), Sampling methods, Gases, Luminous intensity, Diffraction, Particle size measurement, Refractive index, Sprays, Particulate materials
Title in FrenchAnalyse granulométrique. Méthodes par diffraction laser
ISBN978 0 580 92329 6
File Size4.432 MB

 Your basket
Your basket is empty

Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents


The faster, easier way to work with standards

Develop a PAS

Develop a fast-track standardization document in 9-12 months

Worldwide Standards
We can source any standard from anywhere in the world