Restoring a pipe stand

[Bruck]

At first I thought it was ceramic tiles but once I carefully removed the one situated in the lid I realised it is actually a piece of acrylic Perspex sheet. –Poly (methyl methacrylate).

Did you check that with your mass spectometer?

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Once opened it was time to remove the white inlay. I was actually wrong yesterday stating that is was a type of Perspex. These white inlays are nothing else than white glass.

Just plain old silicon dioxide then?