CEN ISO/TS 12025:2021

Nanomaterials - Quantification of nano-object release from powders by generation of aerosols (ISO/TS 12025:2021)

Publication date:   Nov 17, 2021

General information

60.60 Standard published   Jun 2, 2021

CEN

CEN/TC 352 Nanotechnologies

Technical Specification

07.120   Nanotechnologies

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Scope

This document describes methods for the quantification of nano-object release from powders as a result of treatment, ranging from handling to high energy dispersion, by measuring aerosols liberated after a defined aerosolization procedure. Particle number concentration and size distribution of the aerosol are measured and the mass concentration is derived. This document provides information on factors to be considered when selecting among the available methods for powder sampling and treatment procedures and specifies minimum requirements for test sample preparation, test protocol development, measuring particle release and reporting data. In order to characterize the full size range of particles generated, the measurement of nano-objects as well as agglomerates and aggregates is adressed in this document.
This document does not include the characterization of particle sizes within the powder. Tribological methods are excluded where direct mechanical friction is applied to grind or abrade the material.

Life cycle

PREVIOUSLY

Replaces
CEN ISO/TS 12025:2015

NOW

PUBLISHED
CEN ISO/TS 12025:2021
60.60 Standard published
Jun 2, 2021