Hi all. I wanted to open up a discussion on this residue that I have been seeing in wiped film distillation units recently. It seems to mostly show up on the glass leading up to the cold trap. We got a few theories running around the shop that range from lipids to vacuum grease. Has anyone seen this before/got an idea?
Are you running cbd?
Yes, I’ve seen this very often. I believe it is a substance formed from terpenes dissolving lighter fractions of vacuum grease and leaving the heavier parts behind. I never conclusively proved it though.
We have done a few CBD dominant runs but 95% of what we run is THC only.
I do feel like I can see remnants of vacuum grease in it, both in its consistency and color.
I get bits of it pretty regularly, zero chance that it is vacuum grease in my case.
It looks exactly like what was forming in my latest batch of methanol winterized ethanol crude. Had these weird little sugar/fat things popping up everywhere
Falling film crystalization?
I was thinking maybe it could be CBD, the only time I’ve gotten this was when I ran some cbd with a little bit of residual methanol in there. Only one time I’ve had this happen to me
I think it’s definitely a methanol thing. I’ve noticed it on my last two methanol winterized batches and never seen it before with ethanol winterizing. Not sure if it means the methanol does a better or worse job? It spits it out as it concentrates. I’m doing 5:1 meth to oleo, maybe need to bring it down to 4:1 or 3:1?
You can see along the walls in the below pic the same looking residue on there.
We don’t use methanol in any of our processes. Cryo extraction using denatured ethanol.
Yes, I never used methanol either. That doesn’t have anything to do with it.