This has been an issue from the start. Set up
Pump - Welch CRV 4 pro
Mantle size - 1 & 2L
Temp controller - JKEM
Typical numbers for main body (I have 2nd pass numbers in front of me so lets go with those)
mantle temperature - 200C
vapor temperature - 162-167C
Vac depth - 120-140 micron
Condenser temperature - 91C
Stir bar speed - maxed out
Currently distilling ~100g of 1st pass distillate in a 1L flask. Main body started collecting probably 4 or 5 hours ago, and it’s still not quite finished (expect it to be in 30 mins to an hour based on volume remaining in boiling flask). This has been the case pretty much every distillation I’ve done. I know something is not right.
My 2nd pass distillate looks nice I think. Pale yellow and gold when jarred up in bulk. Tests around 88-95% total cannabinoids generally.
The time it takes is driving me crazy. I know my condenser could be hotter, but at the moment I have 50% ethylene glycol in the circulator and I don’t know if I can take it too much hotter. Boiling point at this concentration is around 105C I think. I plan to switch over to a setup that will allow me to run the condenser hotter, but right now I’m stuck with what I have. And even with current set up this seems to be taking way longer than normal.
What am I doing wrong? How do I finish distillations quicker? Is it simply that my mantle temp is too low? I’ve been afraid of cranking it too much higher than the temp required for the the main body to start flowing initially. Do I just need to crank it up bit by bit as the fraction depletes? What would that look like? Thank you for reading and for any help you can provide!