Agreed- I've known people to send off samples for GCMS and have a pretty good idea then of what they've got in their hands. It costs money, but if you're worrie

Agreed- I've known people to send off samples for GCMS and have a pretty good idea then of what they've got in their hands. It costs money, but if you're worried about safety it is possible. (GCMS doesn't actually cost much to run, places just charge a lot for it.)