ISO 19749:2021

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Nanotechnologies - Measurements of particle size and shape distributions by scanning electron microscopy

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ISO 19749:2021

Nanotechnologies - Measurements of particle size and shape distributions by scanning electron microscopy

PUBLISH DATE 2021
ISO 19749:2021

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.

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