# ISO 9022-4:1994 — Withdrawn and superseded ISO standards For ISO 9022-4:1994, item title is Optics and optical instruments — Environmental test methods — Part 4: Salt mist; status code is 9599; successor is ISO 9022-4:2002; withdrawn / published date is 1994-07-07, recorded from its source on 2026-08-05. - **Identifier:** ISO 9022-4:1994 _(verified: appears in the quote below)_ - **Item title:** Optics and optical instruments — Environmental test methods — Part 4: Salt mist _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 9022-4:2002 - **Withdrawn / published date:** 1994-07-07 _(verified: appears in the quote below)_ ## What the source says > 16569,IS,,ISO 9022-4:1994,Optics and optical instruments — Environmental test methods — Part 4: Salt mist,Optique et instruments d'optique — Méthodes d'essais d'environnement — Partie 4: Brouillard salin,1994-07-07,1,['37.020'],ISO/TC 172/SC 1,9599,,[34058],"['en','fr']",8,"
Specifies methods for the testing of optical instruments and instruments containing optical components under equivalent conditions, for their ability to resist salt mist. The purpose of testing is to assess as early as possible the ability of the instrument and, particularly, of its surfaces and protective coatings, to resist the effects of a salt atmosphere. Normally, representative samples or complete small units are ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).