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ISO/TS 24672:2023

Nanotechnologies — Guidance on the measurement of nanoparticle number concentration ISO/TS 24672:2023

Publication date:   Nov 6, 2023

General information

60.60 Standard published   Nov 6, 2023

ISO

ISO/TC 229 Nanotechnologies

Technical Specification

07.120   Nanotechnologies

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Scope

This document provides an overview of the methods used to determine the nanoparticle number concentration in liquid dispersions and aerosols. The methods described are the ensemble measurement techniques of differential centrifugal sedimentation (DCS), multi-angle dynamic light scattering (MDLS), small-angle X-ray scattering (SAXS) and ultraviolet-visible spectroscopy (UV-vis) and the particle counting methods of particle tracking analysis (PTA), resistive pulse sensing (RPS), single particle inductively coupled plasma mass spectrometry (spICP-MS), condensation particle counter (CPC), and differential mobility analysing system (DMAS). This document provides information on the use of each technique, along with considerations on sample preparation, advantages and limitations.

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PUBLISHED
ISO/TS 24672:2023
60.60 Standard published
Nov 6, 2023