# ISO 183:1976 — Withdrawn and superseded ISO standards

For ISO 183:1976, item title is Plastics — Qualitative evaluation of the bleeding of colorants; status code is 9599; successor is ISO/WD 183; withdrawn / published date is 1976-07-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 183:1976 _(verified: appears in the quote below)_
- **Item title:** Plastics — Qualitative evaluation of the bleeding of colorants _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/WD 183
- **Withdrawn / published date:** 1976-07-01 _(verified: appears in the quote below)_

## What the source says

> 4029,IS,,ISO 183:1976,Plastics — Qualitative evaluation of the bleeding of colorants,Matières plastiques — Évaluation de l'exsudation des colorants,1976-07-01,1,['83.080.01'],ISO/TC 61/SC 9,9599,,[33347],"['en','fr']",2,<p>Specifies a method for determining the bleeding tendency of colourants incorporated in plastics. The test piece is placed between a colourless PVC-foil on the one side and a sheet of filtrating paper on the other side. A glass plate laid upon the stack provides a close contact between the test piece and the colour accepting layers. After a specified heating period the stack is divided into the layers and the colourant migration in assessed by visual inspection.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).