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Norm

ÖNORM EN ISO 9308-1

Issue date: 2009 06 01

Water quality - Detection and enumeration of Escherichia coli and coliform bacteria - Part 1: Membrane filtration method (ISO 9308-1:2000 + Cor. 1:2007) (consolidated version)

This part of ISO 9308 describes a reference method (Standard Test) for the detection and enumeration of Escherichia coli and coliform bacteria in water for human consump...
Withdrawn: 2014 12 01
This part of ISO 9308 describes a reference method (Standard Test) for the detection and enumeration of Escherichia coli and coliform bacteria in water for human consumption. The Standard Test is based on membrane filtration, subsequent culture on a differential agar medium and calculation of the number of target organisms in the sample. The Standard Test has a low selectivity, allowing the detection of injured bacteria. Due to the low selectivity, background growth can interfere with the reliable enumeration of coliform bacteria and E. coli, for example in some drinking waters, like shallow well waters, that have not been disinfected and yield a high background growth. This part of ISO 9308 is therefore especially suitable for disinfected water and other drinking waters of low bacterial numbers. This part of ISO 9308 includes a rapid method (Rapid Test) for the detection of E. coli only within 24 h in water for human consumption, which can be useful in special cases when information is needed quickly. The Rapid Test is based on membrane filtration, subsequent culture under selective conditions and calculation of the number of E. coli in the sample. Standard and Rapid Tests described in this part of ISO 9308 are applicable to other kinds of water provided that suspended matter or background flora does not interfere with filtration, culture and counting.
ÖNORM EN ISO 9308-1
2017 10 15
Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 1: Membrane filtration ...
Norm
ÖNORM EN ISO 9308-1
2014 12 01
Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 1: Membrane filtration ...
Norm
ÖNORM EN ISO 9308-1
2009 06 01
Water quality - Detection and enumeration of Escherichia coli and coliform bacteria - Part 1: Membra...
Norm
ÖNORM EN ISO 9308-1
2001 06 01
Water quality - Detection and enumeration of Escherichia coli and coliform bacteria - Part 1: Membra...
Norm
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Norm
ISO 9308-1:2000
Issue date : 2000 09 21
Water quality — Detection and enumeration of Escherichia coli and coliform bacteria — Part 1: Membrane filtration method
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Issue date : 2004 11 03
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Issue date : 1987 04 09
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ISO 5667-1:1980
Issue date : 1980 09 01
Water quality — Sampling — Part 1: Guidance on the design of sampling programmes
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ISO 5667-2:1991
Issue date : 1991 07 18
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ISO 5667-3:1994
Issue date : 1994 07 28
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Issue date : 1999 02 11
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Issue date : 1988 06 23
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ÖNORM EN ISO 9308-1
Issue date : 2014 12 01
Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 1: Membrane filtration method for waters with low bacterial background flora (ISO 9308-1:2014)