ISO 21528-1:2017

Current Revision
Microbiology of the food chain - Horizontal method for the detection and enumeration of Enterobacteriaceae - Part 1: Detection of Enterobacteriaceae

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ISO 21528-1:2017

Microbiology of the food chain - Horizontal method for the detection and enumeration of Enterobacteriaceae - Part 1: Detection of Enterobacteriaceae

PUBLISH DATE 2017
ISO 21528-1:2017

ISO 21528-1:2017 specifies a method, with enrichment, for the detection of Enterobacteriaceae.

It is applicable to:

  • products intended for human consumption and the feeding of animals, and
  • environmental samples in the area of primary production, food production and food handling.

This method is applicable:

  • when the microorganisms sought are expected to need resuscitation by enrichment, and
  • when the number sought is expected to be below 100 per millilitre or per gram of test sample.

A limitation on the applicability of ISO 21528-1:2017 is imposed by the susceptibility of the method to a large degree of variability (see Clause 11).

NOTE: Enumeration can be carried out by calculation of the most probable number (MPN) after incubation in liquid medium. See Annex A.

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