# ISO 7231:1984 — Withdrawn and superseded ISO standards

For ISO 7231:1984, item title is Polymeric materials, cellular flexible — Method of assessment of air flow value at constant pressure-drop; status code is 9599; successor is ISO 7231:2010; withdrawn / published date is 1984-12-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 7231:1984 _(verified: appears in the quote below)_
- **Item title:** Polymeric materials, cellular flexible — Method of assessment of air flow value at constant pressure-drop _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 7231:2010
- **Withdrawn / published date:** 1984-12-01 _(verified: appears in the quote below)_

## What the source says

> 13870,IS,,ISO 7231:1984,"Polymeric materials, cellular flexible — Method of assessment of air flow value at constant pressure-drop",Matériaux polymères alvéolaires souples — Détermination de l'indice d'écoulement d'air — Méthode à chute de pression constante,1984-12-01,1,['83.100'],ISO/TC 45/SC 4,9599,,[43778],"['en','fr']",4,<p>The air flow value may be used to give an indication of the effects of formulation and production variables on the cellular structure. Describes the method with an apparatus either for negative or for positive pressure. Two figures show the test arrangement.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).