A Method of Testing for the Detection, Enumeration, and Identification of E. coli and Coliform Bacteria for The Non-Specialist Which Requires No Prior Formal Training
Well Water Testing requires the use of 2 different media; the E.coli test ,which is Micrology Laboratories' Easygel ® Coliscan ® media and Easygel ® Total Count media. This test will give you total count of General bacteria, a total Coliform count, and distinguish E.coli for enumeration.
Why 2 different media?
The use of 2 different media allows for an evaluation process
called Drop Out Plating. The Coliscan media drops out many
general bacteria with the target of the recovery being total Coliform
Bacteria: color coded growth of E.coli being blue, other Coliform
Bacteria pink. The Total Number (TN) of Coliform,
including E.coli, should be counted as 1 organism: one Coliform
bacteria for enumeration purposes. The count of the General Bacteria
culture will be the higher count culture. Subtract the Coliform
count from the General bacteria count and you can approximate
the count of non-Coliform bacteria in your Well Water sample.
Test Choices
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