ISO 21528-2:2004Withdrawn

Microbiology of food and animal feeding stuffs — Horizontal methods for the detection and enumeration of Enterobacteriaceae — Part 2: Colony-count method

Microbiologie des aliments — Méthodes horizontales pour la recherche et le dénombrement des Enterobacteriaceae — Partie 2: Méthode par comptage des colonies

This edition has been replaced by ISO 21528-2:2017.

Abstract / scope

ISO 21528-2:2004 specifies a method, without pre-enrichment, for the enumeration of Enterobacteriaceae. It is applicable to products intended for human consumption and the feeding of animals, and environmental samples in the area of food production and food handling.

Enumeration is carried out by counting colonies in a solid medium after incubation at 37 °C.

This technique is recommended when the number of colonies sought is expected to be more than 100 per millilitre or per gram of the test sample.

Life cycle

Replaces

ISO 8523:1991WithdrawnMicrobiology — General guidance for the detection of Enterobacteriaceae with pre-enrichmentInternational Standard · Published 3 Oct 1991 · ISO/TC 34/SC 9 ISO 7402:1993WithdrawnMicrobiology — General guidance for the enumeration of Enterobacteriaceae without resuscitation — MPN technique and colony-count techniqueInternational Standard · Published 16 Sep 1993 · ISO/TC 34/SC 9 ISO 5552:1997WithdrawnMeat and meat products — Detection and enumeration of Enterobacteriaceae without resuscitation — MPN technique and colony-count techniqueInternational Standard · Published 4 Dec 1997 · ISO/TC 34/SC 6

Replaced by

ISO/WD 21528-2Deleted (project abandoned)Microbiology of food and animal feeding stuffs — Horizontal methods for the detection and enumeration of Enterobacteriaceae — Part 2: Colony-count methodInternational Standard · ISO/TC 34/SC 9 ISO 21528-2:2017PublishedMicrobiology of the food chain — Horizontal method for the detection and enumeration of Enterobacteriaceae — Part 2: Colony-count techniqueInternational Standard · Published 16 Jun 2017 · ISO/TC 34/SC 9