Which of the following correctly describes the use of a dilution factor of 0.01 for dilution of a bacteria culture?
a. remove 1/100 of the liquid from the original culture.
b. add 100 ml of water to the original culture.
c. add 1 ml from the original culture to 100 mll of water
d. add 10 ml from the original culture to 990 ml of water

d. Add 10 mL from the original culture to 990 mL of water

Explanation:

Dilution factor is the measure of how much has a sample being diluted. It generally comes up while doing serial dilution.

Suppose the original culture = 10 ml. If we add 990 ml water to it the total volume will increase to 1000 ml.

Dilution factor = original sample volume/ new sample volume

Hence here, dilution factor = 10/1000 = 0.01

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