# ISO 22734:2019 — Withdrawn and superseded ISO standards

For ISO 22734:2019, item title is Hydrogen generators using water electrolysis — Industrial, commercial, and residential applications; status code is 9599; successor is ISO 22734-1:2025; withdrawn / published date is 2019-09-30, recorded from its source on 2026-08-05.

- **Identifier:** ISO 22734:2019 _(verified: appears in the quote below)_
- **Item title:** Hydrogen generators using water electrolysis — Industrial, commercial, and residential applications _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 22734-1:2025
- **Withdrawn / published date:** 2019-09-30 _(verified: appears in the quote below)_

## What the source says

> 69212,IS,,ISO 22734:2019,"Hydrogen generators using water electrolysis — Industrial, commercial, and residential applications","Générateurs d'hydrogène utilisant le procédé de l'électrolyse de l'eau — Applications industrielles, commerciales et résidentielles",2019-09-30,1,"['71.120.99','71.100.20']",ISO/TC 197,9599,"[41043,41044]",[82766],['en'],48,"<p>This document defines the construction, safety, and performance requirements of modular or factory-matched hydrogen gas generation appliances, herein referred to as hydrogen generators, using electrochemical reactions to electrolyse water to produce hydrogen.</p><p>This document is applicable to hydrogen generators that use the following type

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).