I guess I was imagining that it was the kind that comes pure in a glass vial, but it's probably more like this: https://www.imagesco.com/geiger/radioactive-sou

I guess I was imagining that it was the kind that comes pure in a glass vial, but it's probably more like this: https://www.imagesco.com/geiger/radioactive-sources.html https://www.imagesco.com/geiger/radioactive-sources.html These are a lot like the description of the plutonium sample as well.