ISO 21528-2:2017/Amd 1:2018 PDF

Scope: This document specifies a method 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 primary production, food production and food handling. This technique is intended to be used when the number of colonies sought is expected to be more than 100 per millilitre or per gram of the test sample. The most probable number (MPN) technique, as included in ISO 21528-1, is generally used when the number sought is expected to be below 100 per millilitre or per gram of test sample.

ISO 21528-2:2017/Amd 1:2018 Referenced Document

ISO 11133 Microbiology of food, animal feed and water — Preparation, production, storage and performance testing of culture media AMENDMENT 1
ISO 18593 Microbiology of the food chain - Horizontal methods for surface sampling
ISO 7218 Microbiology of food and animal feeding stuffs — General requirements and guidance for microbiological examinations AMENDMENT 1

2018 ISO 21528-2:2017/Amd 1:2018 Microbiology of the food chain — Horizontal method for the detection and enumeration of Enterobacteriaceae — Part 2: Colony-count technique
2017 ISO 21528-2:2017 Microbiology of the food chain - Horizontal method for the detection and enumeration of Enterobacteriaceae - Part 2: Colony-count technique
2004 ISO 21528-2:2004 Microbiology of food and animal feeding stuffs - Horizontal methods for the detection and enumeration of Enterobacteriaceae - Part 2: Colony-count method