Plastic and metal ID kits

I’m building up a new lab and I need plastic and metal ID kits for QC and reverse engineering. I found a bunch of links online, but was wondering if anyone with experience has a kit that they would recommend.


Links I found:

Found this PDF:

It describes testing for PVC, HDPE, LDPE, PS, PETE, and PP.

You don’t want to use a spectrometer?

That looks fun. I might have to figure out how to work that into my M&P class this year.