Is there some simple way to get a desired concentration of radioactive solution?
If you need a specific concentration of radioactive solution, don’t draw up the specific amount of water you need and then try to get the “exact” amount of radioactivity. Instead, once you know the concentration and how much radioactivity you want, draw up a little more radioactivity than needed and then adjust the water volume. Example: Say that you want 10 microCuries (uCi) per ml, in 10 ml of water. This means you need a total of 100 uCi. It is much faster and easier to draw up a little more radioactivity than needed and then adjust the water volume. Let’s say that you happen to draw up 120 uCi. Now, to get your desired concentration, you should gather 12 ml of water (120 uCi divided by 10 uCi/ml = 12 ml). (Of course, don’t forget to take into account radioactive decay if there is significant delay between drawing up radioactive volumes from your dose vial. Also, don’t forget you might want to take into account the volume of the radioactivity that you draw up when mixing it into you
