# ISO 1133:1981 — Withdrawn and superseded ISO standards

For ISO 1133:1981, item title is Plastics — Determination of the melt flow rate of thermoplastics; status code is 9599; successor is ISO 1133:1991; withdrawn / published date is 1981-11-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 1133:1981 _(verified: appears in the quote below)_
- **Item title:** Plastics — Determination of the melt flow rate of thermoplastics _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 1133:1991
- **Withdrawn / published date:** 1981-11-01 _(verified: appears in the quote below)_

## What the source says

> 5666,IS,,ISO 1133:1981,Plastics — Determination of the melt flow rate of thermoplastics,Plastiques — Détermination de l'indice de fluidité à chaud des thermoplastiques,1981-11-01,1,['83.080.01'],ISO/TC 61,9599,,[5667],"['en','fr']",6,

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).