Quote Originally Posted by Kirk Keyes View Post
by dissolving it in sodium hydroxide using zirconium crucibles.
[...]
so I came up with the trick of swirling the hot, molten hydroxide around until it chilled and set to the sides of the crucible. Then when fully cool, I could toss them in a beaker and rinse them with dilute HCl until the hydroxide dissolved.
I was not aware of the difficulties in dissolving NaOH ... or did I miss something ?