# ISO 3231:1993 — Withdrawn and superseded ISO standards

For ISO 3231:1993, item title is Paints and varnishes — Determination of resistance to humid atmospheres containing sulfur dioxide; status code is 9599; successor is ISO 22479:2019; withdrawn / published date is 1993-01-21, recorded from its source on 2026-08-05.

- **Identifier:** ISO 3231:1993 _(verified: appears in the quote below)_
- **Item title:** Paints and varnishes — Determination of resistance to humid atmospheres containing sulfur dioxide _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 22479:2019
- **Withdrawn / published date:** 1993-01-21 _(verified: appears in the quote below)_

## What the source says

> 8441,IS,,ISO 3231:1993,Paints and varnishes — Determination of resistance to humid atmospheres containing sulfur dioxide,Peintures et vernis — Détermination de la résistance aux atmosphères humides contenant du dioxyde de soufre,1993-01-21,2,['87.040'],ISO/TC 156,9599,[8440],[73301],"['en','fr']",5,"<p>The principle of the procedure specified is to expose a coated test panel to specified humid atmospheres containing sulfur dioxide. A volume of 0,2 litre, measured at atmospheric pressure, is generally recommended for testing coatings of thickness not exceeding approximately 40 µm. The effects of exposure are evaluated by criteria agreed in advance between the interested parties, these criteri

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).