TheRadiochemist

Does anybody know of a good transparent material to store lithium metal under? I need a sample for an element collection. I take apart coin cells for the dollop of lithium on them, and I want to store it so it doesn’t oxidize. I don’t want to waste another coil cell on testing, so could somebody please give some insight on the efficiency of the following materials? They work in theory, but I have not tested them in practice. Also, does anybody know of a good type of oil? And yes, I have tried petroleum jelly (Vaseline).

-Glycerol 

-Types of mineral oil?