Front

If the concentration of tube 1 = 200 µg/ml (tube 1 is now the starting stock solution) and 0.5 ml of sample is moved each time into 9.5 ml of diluent to complete 3 dilutions from the first tube, what is the concentration in tube #4?

Back

0.025 µg/ml

Front

If 1 mL sample is put into tube #1 that has 49 mL of diluent, what is the tube dilution?

Back

1/50

Front

If the concentration of the stock solution is 50 ng/ml, what is the concentration of the tube with final dilution of 1/1250?

Back

0.04 ng/mL