ISO 19749:2021

Published (Edition 1, 2021)

ISO 19749:2021

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Abstract

This document specifies methods of determining nanoparticle size and shape distributions by acquiring and evaluating scanning electron microscope images and by obtaining and reporting accurate results.

NOTE 1 This document applies to particles with a lower size limit that depends on the required uncertainty and on the suitable performance of the SEM, which is to be proven first -according to the requirements described in this document.

NOTE 2 This document applies also to SEM-based size and shape measurements of larger than nanoscale particles.

General information

Status
: Published

Publication date
: 2021-07

Stage
: International Standard published [60.60]
Edition
: 1

Number of pages
: 71
Technical Committee :
ISO/TC 229

ICS :
07.120
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