1 Scope
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 .
BS EN ISO 19749:2023 Referenced Document
ISO 13322-1 Particle size analysis - Image analysis methods - Part 1: Static image analysis methods
ISO 16700 Microbeam analysis - Scanning electron microscopy - Guidelines for calibrating image magnification
ISO 26824 Particle characterization of particulate systems — Vocabulary
ISO 9276-1 Representation of results of particle size analysis — Part 1: Graphical representation TECHNICAL CORRIGENDUM 1
ISO 9276-2 Representation of results of particle size analysis - Part 2: Calculation of average particle sizes/diameters and moments from particle size distributions
ISO 9276-3 Representation of results of particle size analysis - Part 3: Adjustment of an experimental curve to a reference model
ISO 9276-5 Representation of results of particle size analysis - Part 5: Methods of calculation relating to particle size analyses using logarithmic normal probability distribution
ISO 9276-6 Representation of results of particle size analysis - Part 6: Descriptive and quantitative representation of particle shape and morphology
ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories [Standard in French]