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 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 or surface waters. This method is not suitable for these types of water. The Standard Test is based on membrane filtration,subsequent culture on a differential agar medium and calculation of the number of target organis
EN ISO 9308-1:2000 history
2017EN ISO 9308-1:2014/A1:2017 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/Amd 1:2016)
2014EN ISO 9308-1:2014 Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 1: Membrane filtration method for waters with low bacterial background flora (Incorporates Amendment A1: 2017)
2000EN ISO 9308-1:2000 Water Quality - Detection and Enumeration of Escherichia Coli and Coliform Bacteria - Part 1: Membrane Filtration Method