AS 4276.21:2019 PDF
The objective of this Standard is to specify a method for the enumeration of Escherichia coli (E. coli) and coliform bacteria in water.
This Standard was prepared by the Standards Australia Committee FT-020, Water Microbiology, to supersede AS 4276.21—2005, Water microbiology, Method 21: Examination for coliforms and Escherichia coli—Determination of most probable number (MPN) using enzyme hydrolysable substrates.
The objective of this Standard is to specify a method for the enumeration of Escherichia coli (E. coli) and coliform bacteria in water.
This method is not to be used for the enumeration of E. coli and coliform bacteria in marine water.
This Standard is an adoption with national modifications and has been reproduced from ISO 9308-2:2012, Water quality — Enumeration of Escherichia coli and coliform bacteria, Part 2: Most probable number method.
Appendix ZZ lists the variations to ISO 9308-2:2012 for the application of this Standard in Australia.