Two methods for refining THC distillate, one a Liquid Phase extraction (LPE), the other a Solid Phase extraction (SPE), are presented. The LPE is performed with the distillate suspended in a non polar alkane, then washed with a range of pH balanced saline. This both extracts the water solubles and buffers the solution for proper adsorption during the SPE. The solution is then passed over a chromatography column loaded with MagSil-PR. The alkane is then recovered and the distillate is distilled a second time. The resulting distillate passes PPB residual testing for most common pesticides, specifically Myclobutanil.
We are attempting to follow your remediation of pesticides process and have a few questions. During the purification and buffering with LPE does the order of āwashingā matter. You mention 3 separate solutions at varying pH (4, 7, 9) You then stated that your first wash was at a pH of 9. Is it impactful/critical that we start with the pH9 solution? What is the effect of starting with the pH4 solution and then doing pH9 and then pH7(neutral)? Secondly, if your pH4 solution is below 4 is that acceptable (ie.2.4) or impactful?
Terpenes DEFINITELY carry over myclobutanil and several other pesticides, per my experiments utilizing the original form of this tek we developed on crude rather than on distillate. I had to test that side of the equation.
Can you give us any more information on ARCON Journal?
I canāt find anything relevant online, and youāve titled this post āInternal Journalā ā¦ is this a new phytocannabinoid extraction specific journal in the works per chance? Thatād be super awesome ā¦
We went low, high, neutral and it worked brilliantly. Got the most clear extract we have produced to date. Will try high, low, neutral next run. Thanks for the insight.
Was this pesticide remediation, or just an exercise in clarity?
If the former, do you have lab results before and after? Not that I doubt anything Future has written, but would be great to have this verified independently here on the forum too!
@aclcular, this was for pesticide removal. Current batch is in for testing today. Should have results by the end of the day. We will share them as we get them.
how was the yield? At what point do you know you have put enough material in before any pesticides find their way through? is it color based? how many g material per g magsil is the sweet spot?
