Terrible yield--what am I doing wrong

after installing a sight glass on the top of my column, I just pulled my first 15% run. hallelujah. It seems when i was bottom filling before the sightglass, I probably wasn’t entirely filling the column. This hunch comes from when i bottom filled with the sightglass, i had to vent off column pressure during injection in order to see solvent at the top of my column. this still confuses me a little bit because the whole column should still be getting soaked with a top flow when the valves that isolates my column/collection is open, but perhaps that’s a question for another day.

i found the most efficient use of solvent was to bottom fill the column, then n2 push to collection and repeat. this is, however, quite the pain in the ass as i have to constantly vent n2 out of both the collection and column. I like your idea of using warm solvents, though is there any caveats to that? I’m not very worried about adding too much butane to my system, as from my calculation it would take 4g of vapor butane to displace my column, surely i’m losing more per run anyways. Right now my two concerns are that pushing hot vapor into my column would work against my dewaxing efforts, and that the vapor will condense as soon as it enters my column, and not provide any substantive increase in pressure.

pretty much boils down to, can hot vapor pushes be used in conjunction with a dewaxing type material column?

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i can not find this page for the life on me

Looks like they updated the page.

Click on the description to expand, then at the bottom of the description, there’s a button labeled ‘material capacity’, click that and it will expand the calculator.

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thanks much appreciated!!

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Are you dumping your column after the flood then rinsing or do you rinse as its dumping into the collection?

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Welcome to the future @Goldrush710!

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Thats my old account got an email notification… The latter, I inject at -40 to -60C with the valve to the liquid pump/collection pot closed. Fill the 6x48 depending on how tight u pack around 7.5-8.5 kilos will fit in. Quick soak for a few minutes(never close the injection valve - have it cracked a lil over half way at all times never full blast open it to fill.) takes 2 min to fill soak it for 3 min once the tane stops flowing/solvent scale stops moving. Send it to your next point of process with an extra kilo-2 pushing. if the materials trash i wont send anything extra if its midsy down the middle… super fire… you get it. 1-2 min of distillation time is nothing comparatively to even yielding .2% more each occurrence/extraction.

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Are you running a crc as well? What type of yields are you seeing with this process? Do you run multiple 6x48 columns at once. Sick of getting these 5% yeilds off good product. Would injection valves being fully open cause loss in yield?

The fact you’re asking suggests you’ve heard rumors…the exact effect of “wide open” injection will depend on line size and pressure differential (ie likely system dependent).

So if you think it might help, my suggestion is do the experiment…

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3-5% fresh frozen 4-22% dry material. Id consider 13-15% average top tier growers hoi the 20 often. A huge factor is freshness maybe you have old material and therefore are remediating Flavanoids/pigments/excess weight with it.

@cyclopath can point you in the right direction as well, what he stated was on point i was speaking on my personal experience and he put it in perspective.

If your in cali id literally hand you trim that ik yields over 10% to test out lol. I remember being where u were once. 90% of our job is procurement, ancedotal number but one of my beliefs

And no it wouldmt lose yields it just can push powders/post processing materials all around – depending on your setup

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