what is CFU ?

Answer Posted / bunty, ku (2006-2008)

CFU/ML is CFU per milli-litre.
CFU stands for "Colony Forming Unit".
It depends on three things:
1) How many bacteria colonies do you observe? Count them.
2) How much milk sample do you take to culture?
3) What is your dilution factor?

Say, if you have 100 colonies and you use 0.1ml and your
dilution factor is 10^-2

Your CFU/ml would be (100/0.1) x 10^2

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