Comment by dghlsakjg
1 month ago
This claims to have plutonium https://engineeredlabs.com/products/plutonium-element-cube-t.... Although other studies of trinitite have failed to find any.
It also appears that the soviets used plutonium in fire detectors, and that people were selling these sources at one point https://www.luciteria.com/element-cubes/plutonium-for-sale
you could buy the ones with Americium in most of the EU and US too. I think you can still find some, here and there.
You can still buy Americium detectors.
They're more reliable because they don't stop working when a little dust gets in them like optical sensors.