A 15mg micro ampoule of Sodium metal.  Purity is 99.99% These small ampoules are very safe to own and present no danger if the ampoule breaks. The brownish tint is the glass ampoule itself which is due to the sealing process.  The metal inside is shiny and oxide free.  These will fit nicely inside a 5/8dram vial and one will be included with every purchase.

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