There's also the fact that in a lot of other teks metal lids are depicted. Most metal jar or bottle lids are either unsuitable aluminium (corrodes in caustic solution) or steel with a rubbery coating beneath which degrades in naphtha. If you are seriously worried about plastic then even HDPE isn't guaranteed safe with naphtha above 20 degrees c. Glass turkey basters also have a rubber bulb which does degrade (it shrinks and stiffens over time). Add to this the fact that even naphtha which comes in a metal container has an unknown plastic lid or valve.
Luckily none of it matters too much as long as you don't evaporate the solvent to yield
If you really do care about plastic contaminants you would find a way to collect the freebase without using naphtha at all, since it comes contaminated in the bottle, by the container itself. I suggest re-salting your DMT and somehow freebasing again without using naphtha at all. I'm still trying to figure that one out...
I have seen freebase crystallize from a diluted methanol/DMT solution, but that was already a freebase...
Luckily none of it matters too much as long as you don't evaporate the solvent to yield
If you really do care about plastic contaminants you would find a way to collect the freebase without using naphtha at all, since it comes contaminated in the bottle, by the container itself. I suggest re-salting your DMT and somehow freebasing again without using naphtha at all. I'm still trying to figure that one out...
I have seen freebase crystallize from a diluted methanol/DMT solution, but that was already a freebase...