# ISO/TS 21361:2019 — Withdrawn and superseded ISO standards

For ISO/TS 21361:2019, item title is Nanotechnologies — Method to quantify air concentrations of carbon black and amorphous silica in the nanoparticle size range in a mixed dust manufacturing environment; status code is 9599; successor is ISO/TS 21361:2025; withdrawn / published date is 2019-04-23, recorded from its source on 2026-08-05.

- **Identifier:** ISO/TS 21361:2019 _(verified: appears in the quote below)_
- **Item title:** Nanotechnologies — Method to quantify air concentrations of carbon black and amorphous silica in the nanoparticle size range in a mixed dust manufacturing environment _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/TS 21361:2025
- **Withdrawn / published date:** 2019-04-23 _(verified: appears in the quote below)_

## What the source says

> 70760,TS,,ISO/TS 21361:2019,Nanotechnologies — Method to quantify air concentrations of carbon black and amorphous silica in the nanoparticle size range in a mixed dust manufacturing environment,Nanotechnologies — Méthode de quantification des concentrations dans l'air de noir de carbone et de silice amorphe à l'échelle nanométrique dans un environnement de fabrication industrielle contenant des mélanges de poussières,2019-04-23,1,['07.120'],ISO/TC 229,9599,,[86097],"['en','fr']",13,"<p>This document provides guidelines to quantify and identify air concentration (number of particles/cm<sup>3</sup>) of particles of carbon black and/or amorphous silica by size in air samples collected in a mix

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).