# ISO 8552:2004 — Withdrawn and superseded ISO standards For ISO 8552:2004, item title is Milk — Estimation of psychrotrophic microorganisms — Colony-count technique at 21 degrees C (Rapid method); status code is 9599; successor is ISO 17410:2019; withdrawn / published date is 2004-04-26, recorded from its source on 2026-08-05. - **Identifier:** ISO 8552:2004 _(verified: appears in the quote below)_ - **Item title:** Milk — Estimation of psychrotrophic microorganisms — Colony-count technique at 21 degrees C (Rapid method) _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 17410:2019 - **Withdrawn / published date:** 2004-04-26 _(verified: appears in the quote below)_ ## What the source says > 31881,IS,,ISO 8552:2004,Milk — Estimation of psychrotrophic microorganisms — Colony-count technique at 21 degrees C (Rapid method),Lait — Estimation des micro-organismes psychrotrophes — Technique par comptage des colonies à 21 degrés C (Méthode rapide),2004-04-26,1,['07.100.30'],ISO/TC 34/SC 5,9599,,[67437],"['en','fr']",6,
ISO 8552|IDF 132:2004 specifies a rapid method for estimating the number of psychrotrophic microorganisms by means of the colony-count technique at 21 °C.
The method is applicable to raw and pasteurized milk.
## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).