You have performed a serial dilution of an unknown sample and counted 73 CFU on a...
You have performed a serial dilution of an unknown sample and counted 73 CFU on a countable plate that was marked as a 10-4 dilution and you used 0.1ml to inoculate the plate. What is the population density of the original sample? Please Show Work.....
Homework Answers
To find the original sample population density, divide the conted colonies by the dilution factor and the inoculate:
= 73/ (10-4 * .1)
= 73 X 105
Thus, the original sample's population density was 7.3 X 106 or 73 X 105.
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You have performed a serial dilution of an unknown sample and
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