Question

A 2ml sample was added to a 18 ml diluent in tube 1 which now has a Concentration of 300ng/ml. A 2ml of the sample was moved each time into 18ml of diluent to complete 3 dilutions from the first tube, what is the dilution, final dilution and the concentration of tubes 1, 2,3 and 4

Answer 1

288ng/ml

Step-by-step explanation:

A serial dilution is any dilution where the concentration decreases by the same quantity in each successive step.

• Serial dilutions are multiplicative.

it to 3 rounds of dilutions for the first tube so 3x6=12 so the 300-12=288