Method for Isolation, Enumeration and Confirmation of Coliform and E.coli Organisms from Raw, Potable, Process and Recreational Waters by Membrane Filtration
Presumptive coliform colonies are recognised by their yellow colour and E.coli colonies are recognised by their green colour. The yellow colouration is caused by the fermentation of lactose present in the membrane lactose glucuronide agar (MLGA) medium.
Methodology – The Microbiology of Drinking Water (2009) – Part 4- Methods for the isolation and enumeration of coliform bacteria and Escherichia coli.
Methods for the Examination of Waters and Associated Materials