# ISO 9022-21:1998 — Withdrawn and superseded ISO standards

For ISO 9022-21:1998, item title is Optics and optical instruments — Environmental test methods — Part 21: Combined low pressure and ambient temperature or dry heat; status code is 9599; successor is ISO 9022-23:2013; withdrawn / published date is 1998-07-09, recorded from its source on 2026-08-05.

- **Identifier:** ISO 9022-21:1998 _(verified: appears in the quote below)_
- **Item title:** Optics and optical instruments — Environmental test methods — Part 21: Combined low pressure and ambient temperature or dry heat _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9022-23:2013
- **Withdrawn / published date:** 1998-07-09 _(verified: appears in the quote below)_

## What the source says

> 26915,IS,,ISO 9022-21:1998,Optics and optical instruments — Environmental test methods — Part 21: Combined low pressure and ambient temperature or dry heat,Optique et instruments d'optique — Méthodes d'essais d'environnement — Partie 21: Essai combiné basse pression et température ambiante ou chaleur sèche,1998-07-09,1,['37.020'],ISO/TC 172/SC 1,9599,,[63138],"['en','fr']",4,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).