Any chance youβve tried getting a syringe filter rigged up on one of those? If itβs warm enough and higher micron Iβm sure itβd still flow just fine.
For this youβd have to use like 1.0 ΞΌm or else itβll clog up/blow out with thick oil but it might not be a bad thing to be able to add on since a lot of people are filling carts without a fume hood so they could be getting dust in their jar. Also seems to make the oil glisten a little more just by filtering it that last bit. Could see people liking that add on and you can get PES ones for $1 each
Only PTFE can be used with heat and terps. The ones that arenβt stainless canβt seem to take heat (low working temps) and the stainless ones are almost 100 dollars
Polyethersulfone is a thermoplastic so it would not be an issue. It has fairly good chemical resistance to common essential oils at 100% so 5% terpenes does not seem problematic but that I do not know for certain.