Plate Count : Practice Problem #2.

A sample of E.coli is diluted according to the above diagram. The number of colonies that grew is indicated on the petri plates. How many CFUs are there per ml in the original sample?


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Microbiology Laboratory Manual by Gary E. Kaiser, PhD, Professor of Microbiology
is licensed under a Creative Commons Attribution 4.0 International License.
Last updated: August, 2017