Lots of people have the ability to accurately weigh out 0.030 mg, but a mistake only requires one idiot with cross-contamination of bad math. If you can pass a

Lots of people have the ability to accurately weigh out 0.030 mg, but a mistake only requires one idiot with cross-contamination of bad math. If you can pass a proper high school lab class, you can do this. What makes it easy is that these substances are soluable. Water probably isn't the best choice, but it is cheap. You can dissolve at least 4.21 mg/L of carfentanyl in water. Call it 3 to be conservative. Put 30 mg in 10 L of water. Each cL of water will contain the desired 0.030 mg. Another way is to put half a pound in a 20,000 gallon swimming pool. That would get you 7.5 million of the above. I think this stuff would be more soluble in ethanol. With that, you can solve the problem with multiple dilutions. It's like making homeopathic medicine but stopping before you run out of molecules.