@Boomtownpharms doesn’t have one.
Purchasing one to process 55gal doesn’t make a lot of sense.
Maybe you haven’t seen his plumbing skills?
———
I call this one the Retro-vap.
Using a cold trap with an added spool as an evaporator (heated bath on other side of door).
Blowing solvent off to atmosphere with the aid of a TRS-21. Because I didn’t have a crockpot on hand…
Because: instrumentation!
admittedly I did cobble together a rotovap for the next (and subsequent) batches. this was merely an exercise in “solve it with what you got!”…and these were kicking around under my desk.