1 g of soil is mixed with 99 mL of water. After mixing, 2 mL of the suspension is diluted in 98 mL of water and 0.1 mL is spread on an agar plate.If 56 colonies grew after incubation, calculate the original cfg/g soil. (Answer is 2.8 x 10^6 cfu / g soil, I just need help getting here).

1 g of soil is mixed with 99 mL of water. After mixing, 2 mL of the suspension is diluted in 98 mL of water and 0.1 mL is spread on an agar plate.If 56 colonies grew after incubation, calculate the original cfg/g soil. (Answer is 2.8 x 10^6 cfu / g soil, I just need help getting here).

 

 

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