International Standard
ISO 17867:2020
Particle size analysis — Small angle X-ray scattering (SAXS)
Reference number
ISO 17867:2020
Edition 2
2020-10
© ISO 2024
International Standard
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Published (Edition 2, 2020)

ISO 17867:2020

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CHF 151
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2020-10
    Stage
    : International Standard published [60.60]
  • Edition
     : 2
    Number of pages
     : 27
  • Technical Committee :
    ISO/TC 24/SC 4
    ICS :
    19.120 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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