@TerpFiend follow him as well, along with abels personal account (one of the extractors)
They use a Capnalabs Ethos 4 at -81c - -86c
Have yet to try myself with premo fire material through our delta washer but i imagine you extract as cold as possible then run through whatever filters/filter media followed by low temp rotovapes 35-45c to retain terpenes.
Where i dont know it to what solvent-solute ratio within the solution before they pour into pyrex dishes.
Then id imagine
(1) they throw in a vac oven and backfill with nitrogen
(2) theres enough saturation that at room temp the “crashing” happens then they vac purge remaining ethanol.
They cant be removing the ethanol completely otherwise itd be ethanol shatter