ISO-17867 › Particle size analysis - Small angle X-ray scattering (SAXS)
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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.
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19.120 (Particle size analysis. Sieving Including test sieves and porosimetry)
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Document Number
ISO 17867:2020
Revision Level
2ND EDITION
Status
Current
Publication Date
Oct. 1, 2020
Committee Number
ISO/TC 24/SC 4