How many CFUs are in the original sample with a dilution of 1/100,000, and 63 colonies.

Question

Question

science biology

Answer 1

Answer #1

The formula of CFU count in 1ml of original sample is :

= CFU in diluted sample / Dilution factor

So, As dilution factor is given as 1/100,000, and CFU in diluted sample is given as 63 colonies.

therefore, CFU count in original sample = 63/(1/100,000)

= 63 x 100,000

= 63 x 10⁴ CFU/ml

Answer 2

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