# ISO 11050:1993 — Withdrawn and superseded ISO standards

For ISO 11050:1993, item title is Wheat flour and durum wheat semolina — Determination of impurities of animal origin; status code is 9599; successor is ISO 11050:2020; withdrawn / published date is 1993-07-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 11050:1993 _(verified: appears in the quote below)_
- **Item title:** Wheat flour and durum wheat semolina — Determination of impurities of animal origin _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 11050:2020
- **Withdrawn / published date:** 1993-07-01 _(verified: appears in the quote below)_

## What the source says

> 19030,IS,,ISO 11050:1993,Wheat flour and durum wheat semolina — Determination of impurities of animal origin,Farines de blé tendre et semoules de blé dur — Détermination des impuretés d'origine animale,1993-07-01,1,['67.060'],ISO/TC 34/SC 4,9599,,[70014],"['en','fr']",11,"<p>The principle of the method described is hydrolysis of a test portion with a solution of hydrochloric acid at boiling point, concentration of the insoluble particles at a water/hydrocarbon interface, separation by filtration on a filter paper or membrane, microscopic examination, and counting under reflected light, of the impurities of animal origin (i.e. insects at all stages of their development, insect fragments, mite

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).