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EVS-EN ISO 11731-2:2008

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

General information

Withdrawn from 16.06.2017
Base Documents
ISO 11731-2:2004; EN ISO 11731-2:2008
Directives or regulations
None

Standard history

Status
Date
Type
Name
16.06.2017
Main
09.06.2008
Main
This part of ISO 11731 describes a monitoring method for the isolation and enumeration of Legionella organisms in water intended for human use (e.g. hot and cold water, water used for washing), for human consumption and for treated bathing waters (e.g. swimming pools). It is especially suitable for waters expected to contain low numbers of Legionella. As the growth of Legionella may be inhibited by overgrowth of other bacterial colonies on the membrane, the method is only suitable for waters containing low bacterial counts.

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