NitrogenERbiumDYsprosium
Member
I was cleaning up some old solutions & found these in the bottom of a container that had evaporated quite a bit. I'm fairly sure it was regular AR. The blue is the color of the liquid it came from, and when I add distilled water it seems to dissolve easily. I've been recovering the nitric crystals but never have seen these lovely black ones. What is it?! Thank you 
