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Normas DIN – AENOR
DIN EN ISO 11731-2:2007-10

DIN EN ISO 11731-2:2007-10

Water quality - Detection and enumeration of Legionella - Part 2: Direct membrane filtration method for waters with low bacterial counts (ISO 11731-2:2004); German version prEN ISO 11731-2:2007

Qualité de l'eau - Recherche et dénombrement des Legionella - Partie 2: Méthode par filtration directe sur membrane pour les eaux à faible teneur en bactéries (ISO 11731-2:2004); Version allemande prEN ISO 11731-2:2007

Wasserbeschaffenheit - Nachweis und Zählung von Legionellen - Teil 2: Direktes Membranfiltrationsverfahren mit niedriger Bakterienzahl (ISO 11731-2:2004); Deutsche Fassung prEN ISO 11731-2:2007

Fecha Anulación:
2018-06 /Withdrawn
Equivalencias internacionales:

ISO 11731-2 (2004-05)

prEN ISO 11731-2 (2007-08)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 11731-2:2008-06

Resumen:
This International Standard 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 escpecially suitable for waters expected to contain low number 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.
Keywords:
Bacteria, Bacteria count methods, Bath water, Control method, Counting, Definitions, Drinking water, Legionella, Membrane filtration, Microbiological analysis, Microorganisms, Verification, Washings, Water pollution, Water quality, Water testing
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