Hi Guys! So real quick, I’ve been working with BHO crude for the past 6 months without fail from winterization to distillation. My current process for BHO is melting the crude with a hotplate (never measured the temperature of the hot plate - just melted it down) using a 9:1 ratio (99% room temp isopropyl to crude) placing about 1000grams in a 5 gallon bucket. I’d place the bucket with the warm mixture in a -20c freezer for 12 hours. After the 12 hours, i filter the winterized crude using a pump filter funnel system to remove the fats and then scrub using carbon and bleach. The tincture is then roto’d to remove the excess alcohol then placed in a short path mantle for distillation. The mantle terms from 160f to 195f, then starts pumping clear from ~199f to 220f. This is the process I’ve had success with BHO crude.
I tired following the same recipe for Ethanol Crude, but failed in my first attempt. The end result was very dark clear.
My last attempt was doing a 10:1 ratio of 99% isopropyl to ethanol crude, warming both of them before mixing (Temps were not recorded of either, just warm them enough to get them warm:|) via a hotplate. I put the warm mixture into a 5 gallon bucket and put in a -20c freezer for 24 hours.
This batch was then filtered, scrubbed, put in a roto and finally into a short path for distillation with temps of 230f to 310f to yield clear( we were told that we should turn up the heat and blow through sp1 *whqt temp should this be??) from there it was ran again for a second time via a short path. the amount we yield was very little and still had good amounts of fat in the clear. and Very very dark.
After some research on this forum and online, it sounds like my winterization process isn’t correct.
I wasn’t aware that crude should be melted around 30c to 60c - lower temp the better? (http://hemphacker.com/why-winterization-stabilizes-hash-oil-extracts/) is this true?
Could the 99% isopropyl alcohol be affecting the separation of lipids and waxes?
Any insights or tips would be greatly appreciated!