A
alina
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A culture was diluted by adding a 0.1 ml aliquot to 0.9 ml of water. Then, 0.1 ml of this dilution was plated out, yielding 73 colonies.
1. Calculate the CFU/100 ml in the original culture.
2. 200 microliter of milk was mixed with 9.8 ml of water, and 50 microliter of the dilution was plated. If there were 141 colonies on the plate, what was the original CFU/ml in the milk?
please show your work! Thanks!
1. Calculate the CFU/100 ml in the original culture.
2. 200 microliter of milk was mixed with 9.8 ml of water, and 50 microliter of the dilution was plated. If there were 141 colonies on the plate, what was the original CFU/ml in the milk?
please show your work! Thanks!