I am still working on perfecting this SOP as i will get a little smell to the distillate or some swirls occasionally, but here is a rough draft of it right now that i am achieving 93-96% THC regularly with. This method does for some reason unknown to me yet (and when contacted Pope, none of their engineers could figure it out either?) but during devolatization you will see terps flow down into where your THC fraction would normally go. I have a bucket that i just dispose of them in. Maybe someone can offer some thoughts as to why this happens, and the deeper the vac, the more it happens…
Winterize crude, 1 room temp pass after 4+ hours of sitting in 15:1 ethanol and then chilled to -80c. Maintain -40c or lower while filtering.
Recover your ethanol, i run mine around 68c @ 125rpm. Pour crude into induction pot w/ induction burner. Depending on how much crude volume, use a larger pot incase of muffin-ing. Set aside until your Pope and chillers are completely chilled and ready to be ran:
Setting up the 2" Pope:
I run two external condensers w/ polyscience chillers on mine, both at -20c.
140c for your first pass on the main body.
I have my feed flask wrap set to 110c.
Internal condenser set to 69c.
On my vacuum I have the swagelok setup to control vacuum, so what i do is leave it open and spin it open as far as it can be, so that once started it will not immediately begin trying to achieve a deep vacuum.
Once all parameters are in place, chillers are chilled then i begin heating my crude up. Induction burner set to 320f, put your safety glasses and lab coat/gloves on and have a whisk. Whisking constantly, bring crude solution to 140c. Depending on how much ethanol you have remaining, the material may muffin if you let is sit without whisking for too long. I bring the crude to 140-150c using a laser thermometer. Now, at this part it can be a little tricky and you will learn over time, but as you start to near 110c you should pay attention to how “foamy” the material is being and you may want to turn the temp down on the induction burner to let it idle at that temperature for a little bit until it starts to “foam” less. You will want to do this under a hood preferably, or at least with a fan pointed over the top of the pot to pull the smoking terpenes out of the pot and away from you and plenty of fresh air circulation. It can definitely get a bit smokey. By the time you hit 140c, you will want your material to have little foam on the top and not very volatile.
Once ready, i pour into the feed flask, cap it and turn the pump on.
Depending on how “foamy” the material is and how much you are loading in there, you will need to watch carefully as it may try to muffin. Flick your vacuum on/off if needed. I usually start around 50torr and gradually work my way down until the vacuum is fully closed and leave it around 2-3torr to degas for a few minutes. Once the material has calmed down a bit, close your vac and let it begin getting deep as it can go.
At this point, I let the material sit in the feed flask for an hour or two to degas as much as possible before opening it up to run. I can usually achieve 40-70mtorr and the material will show little activity up top in the feed flask. From there, I turn the wipers on to 50-60, and let it begin a semi-rapid drip. Usually around 150-200g/hr drip rate.
Once it’s done, remove your flasks. I pop my crude flask into an oven @ 120f to keep it warm. I then wash some ethanol through the system to clean it out, set my body temperature to 179c and let it dry. Once mostly dry, I put two flasks on real quick and put it under vacuum to remove any excess gas or residual ethanol.
Reload your crude material into the feed flask, all other parameters are the same except the main body is now at 179c. I however do not run my system at this point deep as it can go any longer. Using the swagelok attachment, i will actually decrease the vac to around 450-500mtorr. From here, the wipers go to 80 and same flow rate as before, medium to semi-rapid drip, approx 150-200g/hr.
If you have done it perfectly, your material should be completely still in the feed flask w/ no volatility happening. If so, you’ve done it correctly and you can open the drip to a steady stream, around 350g/hr w/ no potency or yield loss.