# ISO 2930:1981 — Withdrawn and superseded ISO standards

For ISO 2930:1981, item title is Rubber, raw natural — Determination of plasticity retention index (PRI); status code is 9599; successor is ISO 2930:1995; withdrawn / published date is 1981-12-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 2930:1981 _(verified: appears in the quote below)_
- **Item title:** Rubber, raw natural — Determination of plasticity retention index (PRI) _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 2930:1995
- **Withdrawn / published date:** 1981-12-01 _(verified: appears in the quote below)_

## What the source says

> 7977,IS,,ISO 2930:1981,"Rubber, raw natural — Determination of plasticity retention index (PRI)",Caoutchouc naturel brut — Détermination de l'indice de rétention de plasticité (PRI),1981-12-01,2,['83.040.10'],ISO/TC 45/SC 3,9599,,[20183],"['en','fr']",2,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).