BS ISO 17867:2020 - Particle size analysis. Small angle X-ray scattering (SAXS)

BS ISO 17867:2020

Particle size analysis. Small angle X-ray scattering (SAXS)

Status : Current   Published : October 2020



This document specifies a method for the application of small-angle X-ray scattering (SAXS) to the estimation of mean particle sizes in the 1 nm to 100 nm size range. It is applicable in dilute dispersions where the interaction and scattering effects between the particles are negligible. This document describes several data evaluation methods: the Guinier approximation, model-based data fitting, Monte-Carlo–based data fitting, the indirect Fourier transform method and the expectation maximization method. The most appropriate evaluation method is intended to be selected by the analyst and stated clearly in the report. While the Guinier approximation only provides an estimate for the mean particle diameter, the other methods also give insight in the particle size distribution.

Standard NumberBS ISO 17867:2020
TitleParticle size analysis. Small angle X-ray scattering (SAXS)
Publication Date09 October 2020
Normative References(Required to achieve compliance to this standard)ISO 26824, ISO/TS 80004-2
Informative References(Provided for Information)ISO/IEC 17025, ISO/IEC Guide 98-3, ISO 9276-1, ISO 9276-2
ReplacesBS ISO 17867:2015
International RelationshipsISO 17867:2020
Draft Superseded By19/30376087 DC
DescriptorsOptical measurement, Particulate materials, Suspensions (chemical), Dispersions (chemical), Particle size distribution, Particle size measurement, Microscopic analysis
Title in FrenchAnalyse granulométrique. Diffusion des rayons X aux petits angles (SAXS)
ISBN978 0 539 00600 1
File Size1.979 MB

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