I was hoping you guys could offer some insight.
I just got the residual solvent results back on my crude. The first batch I tested came back with no residual sovents save for a .42ppm Ethanol result which was expected. This most recent batch came back with a whole host of new solvents and I have no idea where they came from. I am using Ethanol from the same supplier and nothing has changed in my process. I am freaking out a bit. Did a dab of vacuum grease get in to my roto flask? Did I drop some plastic shavings in the tincture? Did some Iso propyl residue get into one of my beakers? Did I get a bad batch of Ethanol? Mostly I was hoping someone could offer some info on common sources of these solvents:
Isopropanol (I obviously know where this can come from)