Presumptive count includes

Presumptive coliform test In presumptive coliform test the most probable number of all coliform organisms (not only E.coh) are counted → Presumptive coliform count. The methods are : - Multiple tube method Membrane filtration technique. After analysing presumptive coliforrn count, E.coli count is confirmed by other tests, e.g., by Eijkman test or indole production..