# ISO 5541-1:1986 — Withdrawn and superseded ISO standards For ISO 5541-1:1986, item title is Milk and milk products — Enumeration of coliforms — Part 1: Colony count technique at 30 degrees C; status code is 9599; successor is ISO/DIS 5541-1 | ISO 4832:2006; withdrawn / published date is 1986-11-13, recorded from its source on 2026-08-05. - **Identifier:** ISO 5541-1:1986 _(verified: appears in the quote below)_ - **Item title:** Milk and milk products — Enumeration of coliforms — Part 1: Colony count technique at 30 degrees C _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/DIS 5541-1 | ISO 4832:2006 - **Withdrawn / published date:** 1986-11-13 _(verified: appears in the quote below)_ ## What the source says > 11604,IS,,ISO 5541-1:1986,Milk and milk products — Enumeration of coliforms — Part 1: Colony count technique at 30 degrees C,Lait et produits laitiers — Dénombrement des coliformes — Partie 1: Technique par comptage des colonies à 30 degrés C,1986-11-13,1,['07.100.30'],ISO/TC 34/SC 5,9599,,"[27462,38282]","['en','fr']",7,"

Specifies a method for enumerating bacteria which, at 30 degrees centigrade, form characteristic colonies and which can ferment lactose with the production of gas under the operational conditions described. The method described is applicable to milk and liquid milk products, dried milk, dried sweet whey, dried buttermilk, lactose, acid casein, lactic casein, rennet casei ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).