2017DIN EN ISO 9308-1:2017-09 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); German version EN ISO 9308-1:2014 + A1:2017
2017DIN EN ISO 9308-1:2017 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) (includes Amendment A1:2017)
2014DIN EN 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 (ISO 9308-1:2014); German version EN ISO 9308-1:2014
2001DIN EN ISO 9308-1:2001 Water quality - Detection and enumeration of Escherichia coli coliform bacteria - Part 1: Membrane filtration method (ISO 9308-1:2000); German version EN ISO 9308-1:2000