TIA to everyone posting and replying on this fantastic forum.
I have been having a seemingly hard time getting a full winterization on my CBG crude. I’ve processed a handful of liters following a general cold-crash out winterization, and filtering through a ~2 to 4um filter paper. Usually it took three round of winterization to see near nothing or less fats/waxes on the paper. We then use a 5L roto to roto out the EtOH at 60•C. Then when almost all EtOH had been recovered, we raised the bath temp to 80•C to ensure all EtOH was out / get crude runny enough to easily pour out.
The last few kg of CBG crude I have tried to put through the 5L seems to still have fats in it but has been winterized 4 or 5 times now and I am not catching any fats on the paper. I have even lowered the ratio to 4-5:1 EtOH to crude and haven’t seen any difference in what’s been caught on the paper. Last night I ran the thick crude warm through an AlO3 bed, placed it in the freezer (-65•C) overnight, and filtered over another bed of AlO3. I’ll post some pictures I took today. The edges look like they’re crystalizing (ish) but when looking into the bulb it looks like fats. Anyone have any idea what’s going on? TIA!