Hey guys, I hope to find some answers with your help. As the subject says I’m having a problem with my THC content decreasing from 70% to 45-50% after distillation process.
I start baking my biomass in an oven for 3 hours at 240F and then immediately put into a supercritical CO2 extraction then goes winterization, filtration, evaporation, decarbing on a hot plate (110 mins at 110C). At that point the potency test result is at or around 70% d9-THC and around 7% CBC (d10). After distillation the numbers change to 45-50% d9-THC and 20-25% CBC (d10) which I’ve been getting constantly time after time.
I’ve tried to find the problem within the distillation process and tried many different approaches to no avail. My rig is Lab Society’s 5L Gen2. During my last distillation I tried to keep the temps as low as possible and distilled 200g at 177C in BF and at around 155C at heads in 3 hours. My vacuum was at 100-150 microns throughout the whole process.
I had a chance to speak with Bryan from Lab Society and was told that the problem comes all the way from the extraction process/extraction type. The CO2 is getting mixed with water that’s in the biomass/extractor’s system under high pressure and forming carbonic acid which gets carried over all the way into distillation process and that acid + heat degrades the THC. I was advised to wash the decarbed oil with baking soda which will neutralize the acid and bring the pH level to neutral.
Since I’ve never done the washing with water I would highly appreciate any help or info of step by step process explanation to accomplish this task if the theory with the carbonic acid is actually true.
Thanks in advance guys!!!