# ISO 7954:1987 — Withdrawn and superseded ISO standards

For ISO 7954:1987, item title is Microbiology — General guidance for enumeration of yeasts and moulds — Colony count technique at 25 degrees C; status code is 9599; successor is ISO 21527-2:2008 | ISO 21527-1:2008; withdrawn / published date is 1987-10-15, recorded from its source on 2026-08-05.

- **Identifier:** ISO 7954:1987 _(verified: appears in the quote below)_
- **Item title:** Microbiology — General guidance for enumeration of yeasts and moulds — Colony count technique at 25 degrees C _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 21527-2:2008 | ISO 21527-1:2008
- **Withdrawn / published date:** 1987-10-15 _(verified: appears in the quote below)_

## What the source says

> 14931,IS,,ISO 7954:1987,Microbiology — General guidance for enumeration of yeasts and moulds — Colony count technique at 25 degrees C,Microbiologie — Directives générales pour le dénombrement des levures et moisissures — Technique par comptage des colonies à 25 degrés C,1987-10-15,1,['07.100.01'],ISO/TC 34/SC 9,9599,,"[38276,38275]","['en','fr']",3,"<p>The method consists in preparing of poured plates using a specified selective culture medium and a specified quantity of a test sample, further dilutions of the test sample. Then aerobic incubation of the plates at 25 degrees centigrade for 3, 4 or 5 days, followed by calculation of the number of yeasts and moulds per gram or per millilitre of

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).