ISO 11133-2014 PDF

Full title and description

ISO 11133:2014 — Microbiology of food, animal feed and water — Preparation, production, storage and performance testing of culture media. This International Standard defines terminology and specifies requirements and test methods for the preparation, production, storage and performance testing of culture media used for microbiological analysis of food, animal feed, food‑production environments and water. It applies to commercial and non‑commercial manufacturers and to laboratories preparing media for their own use.

Abstract

ISO 11133:2014 gives general terminology related to quality assurance of culture media, sets requirements for preparing dehydrated, reconstituted and ready‑to‑use media, and specifies criteria and methods for performance testing (productivity, selectivity, specificity) using defined challenge organisms and control strains. The standard is intended to ensure media are fit‑for‑purpose for detection and enumeration methods in food, feed and water microbiology.

General information

• Status: Published.
• Publication date: May 2014 (corrected versions published Oct/Nov 2014).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 07.100.20 (Microbiology of water); 07.100.30 (Food microbiology).
• Edition / version: Edition 1 (2014). Amendments published (notably Amd 1:2018 and Amd 2:2020).
• Number of pages: 99 pages (main publication).

Scope

The standard specifies requirements for preparation, production, storage and in‑house quality control of culture media and describes performance testing procedures and acceptance criteria (quantitative productivity and qualitative selectivity/specificity) for media used in microbiological analyses of food, animal feeding stuffs, production environment samples and water. It covers commercially manufactured ready‑to‑use and dehydrated media, media to be remelted or supplemented, media prepared from commercial dehydrated formulations, and media prepared from individual components. Applicable users include commercial manufacturers, non‑commercial suppliers and laboratories preparing media for their own testing.

Key topics and requirements

• Definitions and terminology for quality assurance, batches, performance testing metrics (productivity, selectivity, specificity).
• Quality management and documentation: batch records, traceability, expiry/first‑open dating, storage conditions and stock rotation (FIFO).
• Laboratory preparation rules: precise formulation, pH control, sterilization, documentation of operator, sterilization conditions and materials/lot numbers.
• Performance testing procedures: choice and maintenance of reference strains, challenge testing protocols, quantitative productivity criteria (e.g., recovery rates) and selectivity checks using defined cocktails of organisms.
• Acceptance criteria and interpretation guidance for solid and liquid media, including examples of performance criteria for common media and test organisms (annexes of the standard).
• Guidance on storage, handling of dehydrated media and supplements, and actions when physical changes or moisture uptake are detected.

Typical use and users

Primary users are commercial culture‑media manufacturers and distributors who must demonstrate batch performance and supply QC documentation; microbiology laboratories in food, feed and water testing that prepare or accept media batches; non‑commercial suppliers (research institutes, hospitals) providing media to third parties; quality managers and accreditation bodies using the standard as part of laboratory quality systems and audits. Use cases include batch release testing, supplier qualification, internal media preparation procedures, and validation/verification of media for specific analytical methods.

Related standards

ISO 11133:2014 references and aligns with a number of horizontal and method standards used across food and water microbiology, for example ISO 6887 series (sample and dilution preparation), ISO 7218 (general requirements and guidance for microbiological examinations), ISO 8199 (enumeration guidance for water), ISO 4833, ISO 11290 (Listeria methods), ISO 6579 (Salmonella methods) and others. It also replaced earlier technical specifications (ISO/TS 11133-1:2009 and ISO/TS 11133-2:2003) and is maintained with amendments (Amd 1:2018, Amd 2:2020).

Keywords

ISO 11133, culture media, performance testing, productivity, selectivity, specificity, preparation, storage, quality assurance, food microbiology, water microbiology, animal feed, batch traceability, control strains.

FAQ

Q: What is this standard?

A: ISO 11133:2014 is an international standard that sets terminology, requirements and test methods for the preparation, production, storage and performance testing of culture media used in microbiological analysis of food, animal feed and water.

Q: What does it cover?

A: It covers four categories of media (ready‑to‑use, remeltable/supplemented, prepared from dehydrated commercial formulations, and prepared from individual components), quality management and documentation, laboratory preparation and storage practice, and specific performance testing procedures and acceptance criteria (productivity, selectivity, specificity) using reference strains.

Q: Who typically uses it?

A: Commercial media manufacturers and suppliers, microbiology laboratories (food, feed, water), quality managers, accreditation assessors and research organisations that prepare or accept culture media for microbiological testing.

Q: Is it current or superseded?

A: ISO 11133:2014 is the published edition (2014) and has had amendments (Amd 1:2018 and Amd 2:2020). The standard has been placed in a lifecycle stage indicating it is planned for revision (a DIS draft has been under development); users should check for the latest amendments or revisions before relying on specific procedural details.

Q: Is it part of a series?

A: It consolidates and replaces earlier ISO/TS documents on media preparation and is linked to many method‑specific ISO standards used for microbiological testing (for example ISO 6887 series, ISO 7218, ISO 4833, ISO 11290, ISO 6579). It functions as a cross‑cutting quality and media performance reference across the food/water microbiology suite.

Q: What are the key keywords?

A: Culture media, performance testing, productivity, selectivity, specificity, preparation, storage, quality assurance, batch traceability, control strains, food microbiology, water microbiology.