# ISO 4590:1981 — Withdrawn and superseded ISO standards

For ISO 4590:1981, item title is Cellular plastics — Determination of volume percentage of open and closed cells of rigid materials; status code is 9599; successor is ISO 4590:2002; withdrawn / published date is 1981-12-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4590:1981 _(verified: appears in the quote below)_
- **Item title:** Cellular plastics — Determination of volume percentage of open and closed cells of rigid materials _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4590:2002
- **Withdrawn / published date:** 1981-12-01 _(verified: appears in the quote below)_

## What the source says

> 10525,IS,,ISO 4590:1981,Cellular plastics — Determination of volume percentage of open and closed cells of rigid materials,Plastiques alvéolaires — Détermination du pourcentage volumique de cellules ouvertes et fermées des matériaux rigides,1981-12-01,1,['83.100'],ISO/TC 61/SC 10,9599,,[30409],"['en','fr']",12,<p>Specifies a general method ba measurement first of geometrical volume and of the air impenetrable volume of test specimens. This method provides for correcting the apparent open cell volume by taking into account the surface cell opened by cutting during specimen preparation. Two alternative methods and corresponding apparatus are specified for the measurement of the impenetrable vo

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).