# ISO 21575:2018 — Withdrawn and superseded ISO standards

For ISO 21575:2018, item title is Optics and photonics — Optical materials and components — The powder test method for the water resistance of optical glass; status code is 9599; successor is ISO 21575:2026; withdrawn / published date is 2018-06-28, recorded from its source on 2026-08-05.

- **Identifier:** ISO 21575:2018 _(verified: appears in the quote below)_
- **Item title:** Optics and photonics — Optical materials and components — The powder test method for the water resistance of optical glass _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 21575:2026
- **Withdrawn / published date:** 2018-06-28 _(verified: appears in the quote below)_

## What the source says

> 71112,IS,,ISO 21575:2018,Optics and photonics — Optical materials and components — The powder test method for the water resistance of optical glass,Optique et photonique — Matériaux et composants optiques — Méthode d'essai sur poudre pour déterminer la résistance à l'eau des verres optiques,2018-06-28,1,['37.020'],ISO/TC 172/SC 3,9599,,[88734],['en'],4,<p>This document specifies the general procedures of the powder test method for the water resistance of optical glass.</p>

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).