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About This Item

 

Full Description

ISO 11731:2017 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.
 

Document History

  1. ISO 11731:2017

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    Water quality - Enumeration of Legionella

    • Most Recent
  2. ISO 11731-2:2004


    Water quality - Detection and enumeration of Legionella - Part 2: Direct membrane filtration method for waters with low bacterial counts

    • Historical Version
  3. ISO 11731:1998


    Water quality -- Detection and enumeration of Legionella

    • Historical Version