International Organization for Standardization (ISO)
Latest
ISO 11731:2017
Scope
This document specifies culture methods for the isolation of Legionella and estimation of their numbers in water samples.
These methods are applicable to all kinds of water samples including potable, industrial, waste and natural waters. These methods can be used for water related matrices, e.g. biofilms, sediments, etc.
Not all Legionella species are culturable; therefore, the methods described in this document do not recover all species of Legionella.
ISO 11731:2017 Referenced Document
ISO 11133 Microbiology of food, animal feed and water — Preparation, production, storage and performance testing of culture media AMENDMENT 1
ISO 19458 Water quality - Sampling for microbiological analysis
ISO 3696 Water for analytical laboratory use; Specification and test methods
ISO 7704 Water quality — Requirements for the performance testing of membrane filters used for direct enumeration of microorganisms by culture methods
ISO 8199 Water quality - General requirements and guidance for microbiological examinations by culture
ISO 11731:2017 history
2017ISO 11731:2017 Water quality — Detection and enumeration of Legionella
1998ISO 11731:1998 Water quality - Detection and enumeration of Legionella