Enumerate microbes in real-life application

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Question

When serial dilution is used to enumerate (count) microbes in a real-life application, such as in a water quality study, each dilution is plated on a series of dishes. The data from each dish (the number of CFUs) is pooled together and an average CFU per dish is generated for the dilution. It is this average, rather than the actual plate counts, that is used to calculate the final CFU/mL result. Why do you think an average is used rather than the actual plate counts? Why might there be differences in the number of CFUs on each dish when they are grown from the same dilution?

Reference no: EM134042557

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