Assume that you have a stock solution of epinephrine at a concentration of 1 mg/ml. knowing that the pipette you will use delivers 20 drops/ml,
calculate the number of drops of the stock solution that must be added to a smooth muscle bath containing 25 ml of locke’s solution so that the final concentration of epinephrine in the muscle bath will be 100 µg/ml, and
compute the dilution factor which describes the extent to which a single drop of stock drug solution is diluted when added to the smooth muscle bath.
number of drops = [ select ] ["54", "55.6", "20", "2.78"]
dilution factor == [ select ] ["0.25", "0.002", "4", "501"]