ISO 7251:2005 PDF

Scope: This International Standard gives general guidelines for the detection and enumeration of presumptive Escherichia coli by means of the liquid-medium culture technique and calculation of the most probable number (MPN) after incubation at 37 °C, then at 44 °C. This International Standard 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.

ISO 7251:2005 Referenced Document

ISO 6887-1 Microbiology of the food chain*， 2024-03-01 Update
ISO 6887-2 Microbiology of the food chain - Preparation of test samples, initial suspension and decimal dilutions for microbiological examination - Part 2: Specific rules for the preparation of meat and meat products*， 2017-03-01 Update
ISO 6887-3 Microbiology of the food chain — Preparation of test samples, initial suspension and decimal dilutions for microbiological examination — Part 3: Specific rules for the preparation of fish and fishery*， 2020-03-03 Update
ISO 6887-4 Microbiology of the food chain - Preparation of test samples, initial suspension and decimal dilutions for microbiological examination - Part 4: Specific rules for the preparation of miscellaneous products*， 2017-03-01 Update
ISO 7218 Microbiology of food and animal feeding stuffs — General requirements and guidance for microbiological examinations AMENDMENT 1*， 2007-08-15 Update
ISO 8261 *， 2024-04-18 Update
ISO/TS 11133-1 Microbiology of food and animal feeding stuffs - Guidelines on preparation and production of culture media - Part 1: General guidelines on quality assurance for the preparation of culture media in the laboratory*， 2009-02-01 Update
ISO/TS 11133-2 Microbiology of food and animal feeding stuffs. Guidelines on preparation and production of culture media. Part 2: Practical guidelines on performance testing of culture media; Amendment 1: Test microorganisms for commonly used culture media*， 2011-02-01 Update

2023 ISO 7251:2005/Amd 1:2023 Microbiology of food and animal feeding stuffs — Horizontal method for the detection and enumeration of presumptive Escherichia coli — Most probable number technique — Amendment 1: Inclusion of performance testing of culture media and reagents
2005 ISO 7251:2005 Microbiology of food and animal feeding stuffs - Horizontal method for the detection and enumeration of presumptive Escherichia coli - Most probable number technique
1993 ISO 7251:1993 Microbiology; general guidance for enumeration of presumptive Escherichia coli; most probable number technique
1984 ISO 7251:1984 Microbiology; General guidance for enumeration of presumptive Escherichia coli; Most probable number technique