Calcium is an Alkaline Earth Metal. It is a reactive metal that forms a black oxide-nitride layer. Here we present 2 x un-oxidized shiny small piece under argon gas in a glass ampoule.
We know some of you like experimenting, so we decided to give you 2 ampoules. ( In case you need to use one, you still have one for display.
The Vials Measure 70mm x 22mm.
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