@cyclopath did you see the post from @Griffin.Labs a while back. He was saying running through with propane for terps and then a secondary wash with tane brought the cannabinoids through. No idea the parameters but he did say it gave him different “fractions” a htfse and a hcfse.
6 Likes
I did.
here it is
having now started playing with this style of CRC, I’ll have to back-pedal and say yes to more than one of the Aquatek columns.
thanks for upping my game everybody!
11 Likes
Please share what you find if you don’t mind! If i had a second solvent tank I’d be playing with it now… Can’t wait to see the results!
1 Like
where is that griffin labs post?
I linked it up thread…directly under the post you responded to.
here it is again: Indofabs C.R.C & BHO Color Remediation Tek - #6531 by Griffin.Labs
4 Likes
Looking at this from a classical LC/SFC perspective, dumping your whole solvent/eluent volume on top of your column and collecting a whole bunch of fractions should give you a decent separation. Theoretically if you could axially compress the adsorbents in your column to a reasonably consistent density, you could throw a detector below the bed and do a stacked injection, and then collect fractions based on absorption spectra. You’d need to inject clean makeup solvent into the top of your column to keep your injections moving, and find/create absorption data for the eluent compounds, but once you’d established absorption values all you’d need to get clean compound separation is a big ol column. Stacked injection and specialized stationary phase resins seems like the next logical step for hydrocarbon extracts if you keep following the chromatography rabbit hole
5 Likes
This explains why I’ve been getting request for remediation of diamonds and CRC crystals lately. All have this sulfur smell we assumed came from the cultivators.
luckily I can get it out but even in 99% THCA power it takes a day or two of airing out before it’s completely gone.
I deleted my post lol. I hadn’t noticed @cyclopath had already posted the quote from @Griffin.Labs.
1 Like
Correct - my SOP involves rinsing with clean solvent first to wet & compress the bed and establish the PSI. then the solution and finally clean solvent are introduced and that same PSI is maintained for the duration of the run. I collect fractions until I get clean solvent again.
So far no c1d1 detectors have proven effective but Arometrix is working on one that I’m looking forward to trying. I’ve tried using a few different detectors to measure density, flowrate, etc but that did not produce reliable data after the first terpene fraction. I live deep inside this chromatography rabbit hole lol always trying to make it better.
16 Likes
@murphymurri
If there was a sight glass after the column, is there a visual difference, in viscosity or anything, to determine where the fraction would change…
Is there a fraction finder now? It’s been a while since the post
1 Like