I was using a 2015 PX1.
Which has a jacketed solvent tank and sight glasses. Filled that with ethanol, got it to -30C, used N2 to push it through.
Recovered into same vessel.
Done deliberately to bamboozle the boss in my case. I was told to “make shatter”.
We were not licensed for hydrocarbons, so I didn’t use them. Boss couldn’t tell the difference while extracting, and EHO makes a lovely shatter, so he couldn’t tell when I was done either.
The shotgun style heat exchanger I added to make it run faster helped with passive hydrocarbon recovery too…