# ISO 21438-2:2009 — Withdrawn and superseded ISO standards

For ISO 21438-2:2009, item title is Workplace atmospheres — Determination of inorganic acids by ion chromatography — Part 2: Volatile acids, except hydrofluoric acid (hydrochloric acid, hydrobromic acid and nitric acid); status code is 9599; successor is ISO 21438-2:2024; withdrawn / published date is 2009-12-04, recorded from its source on 2026-08-05.

- **Identifier:** ISO 21438-2:2009 _(verified: appears in the quote below)_
- **Item title:** Workplace atmospheres — Determination of inorganic acids by ion chromatography — Part 2: Volatile acids, except hydrofluoric acid (hydrochloric acid, hydrobromic acid and nitric acid) _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 21438-2:2024
- **Withdrawn / published date:** 2009-12-04 _(verified: appears in the quote below)_

## What the source says

> 43381,IS,,ISO 21438-2:2009,"Workplace atmospheres — Determination of inorganic acids by ion chromatography — Part 2: Volatile acids, except hydrofluoric acid (hydrochloric acid, hydrobromic acid and nitric acid)","Air des lieux de travail — Détermination des acides inorganiques par chromatographie ionique — Partie 2: Acides volatils, sauf acide fluorhydrique (acide chlorhydrique, acide bromhydrique et acide nitrique)",2009-12-04,1,['13.040.30'],ISO/TC 146/SC 2,9599,,[83299],"['en','fr']",29,"<p>ISO 21438-2:2009 specifies a method for the determination of the time-weighted average mass concentration of hydrogen chloride (HCl) gas and hydrochloric acid mist, hydrogen bromide (HBr) vapour and h

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).