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Light, heat, and oxygen degrade the concentrate. I keep mine in a closed opaque container in the freezer or fridge, depending on how long I'm storing it.

Besides mechanical agitation by vibrating, you can also run it multiple times. Extraction works better with flow. When solvent and solute meet, there is a boundary layer formed between them that is a mixture of solute and solvent. That lowers both the solvent and solute concentration...

Are you using a closed column by itself or a closed loop system with recovery? I get about 18 to 25% yield with a closed loop, depending on strain, and flow about 3 column volumes to do so. When I was experimenting with closed column alone, I increased the volume by vibrating it while it soaked.

I do use mine over and over, but sometimes it takes more steps. I reach 130 proof in one run and 185 proof in about five runs, or one130 proof run with a reflux column.

If you use it to extract concentrates from plant material, it picks up water from the material, which you can't remove to azeotropic 190 proof 95% levels in one pass using a pot still, or a Source Turbo.

Your crockpot is probably not hot enough to reach 250F. I use a Cuisinart electric fondue pot with vegetable oil in it. The alcohol bubbling off and decarboxylation produce noticeably different bubbles. The alcohol produces random sized bubbles, and the decarboxylation produces small fizzy...

You can always homogenize it using a CAT Scientific Homogenizer. https://www.catscientificna.com/products.php?page=Homogenizers

I decarb after extraction because I can tell exactly where I am at in the process by simply watching C02 bubble production. Plant material decarbs naturally with time and it isn't possible to tell what percent of the plants THC-A has been converted to THC by look, touch, or smell, so a set time...

Precision has always been proud of their units, so it would not surprise me that they sold it for $20K. Rule of thumb is to double manufacturing costs to cover expenses and margin, so with a sell of $20K, we ASSume the build cost would be around $10K. For a US built unit, that is probably in...

Your screens appear to be about 150 mesh. What is the OD and length of your column (3" X 24")?. What is the ID and depth of your bottom recovery pot?

Yes.

At age 79, I can relate to getting older and more conscious of time and energy, so judge the worthiness of a project by whether I am having fun. I mostly assembled my test sled from components left over from closing WolfWurx, Inc, or it would ostensibly be less elaborate. Part of my thrill...

I would use a 150 mesh screen at the end of the column and suggest starting with a Whatman #1 filter paper on the inline dewax filter plate. Not sure what diameter you need, but here is the general idea...

Does your system have a central down tube in the lower tank? Can we see a dirty peeecture of the bottom of the lid?

With the inline dewax, as your filter blinds, your flow capabilities drop, so you may have to push, using hot vapors or N2. A difference in design strategies, as I designed WolfWurx systems to chill the material to -18C in a deep freeze and drop the LPG temperature to -30/-50C before injection...

Using a Terpenator, I typically put three column volumes through. You have to have room in your lower tank to do so, or run it more than once. As the first volume flowing through does most of the work (80/90%), subsequent volumes are of diminishing returns. What are the dimensions of your...

Yes, I tested the ETOH Pro as well, plus. Alas my hosts server crashed and lost my site in its entirety, or I could share that experience with you. So far we've recovered that articles verbiage, but not the pictures. For what's worth...

What Lusidghost said. Close collection tank top valve. Connect your collection pot to your recovery tank with a hose, open that valve at the hose connection, open recovery tank valve, and heat the collection pot with hot water, while chilling the recovery tank using ice or dry ice slurry...

Yes.