yellowed murky plastic

[Fred Cisin]

On Mon, 20 Jun 2005, [ISO-8859-1] Bjørn Vermo wrote:
> To restore old plastic, one needs to know what kind of polymer, what
> kind of plasticisers, and what kind of filler it is made from.
> I only took two years of organic chemistry, so I know way too little
> about how to proceed, but I have an inkling this is going to be a big
> issue for future museum people.

So,...
is it possible to make a UBIK that can handle most of the case plastics?