I don’t have data on terpene content of an extract before and after CRC however the results on the left are from flower and the results on the right are for BHO made from the trim of that flower and filtered thru W1. Most of the terpenes are still there, just in different ratios.
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Wow there are a good amount of terpenes detected in the hash that were non existent on the flower. Very cool info bro. 
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How is that even possible? Is every terpene available in a strain, just either unlocked or locked up until some process of fractioning has occurred? For instance how did the amount of Myrcene increase by .28?
There could be some terpenes that we present in the flower but were in low enough amounts that they were not detectable or quantifiable. When it was extracted and concentrated, these terpenes may have passed the testing threshold causing them to appear on the test.
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same way you go from 10% THC to 80% THC when you make BHO from trim.
same way pesticide compliant flower can yield hot extracts
same way extracting compliant CBD flower leads to crude over the legal THC limit.
…
we are after all making concentrates!!
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Would running B80 and D. E. be good to purify etoh bucket tek mixtures as well?
T5 and (hardwood) AC is the way to go for ethanol. At least it’s worked best for me.
Edit: And don’t forget to filter cold.
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Very interesting data. Thank you for sharing.
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@G_Boe thanks, it makes sense and that was the insight I was looking for.
@cyclopath…
happy to be the Donnie to your Walter any day, dude.
@Apothecary36, to be honest, I’ve purchased 50+kg of W1 the last couple months and not experienced awesome results. Thrown varying ratios per pound of starting material based on freshness and suggested recipes on this forum, and couldn’t get close to the color everyone raves about. My default assumption is that it’s an error or lost translation on my end (@cyclopath sagely snark?): My system isn’t getting cold enough; the blast room’s ambient temps are fucking with the pours; pitched collection pots; classically dark calyx strain varietals, on and on.
In example, last week I ran 43lbs fresh dep Mac1 flowers (harvested 7/12) in ~3700g increments with W1@100g/450g starting material (~825g W1 per run for anyone keeping score) with a 1” cake of DE on the bottom. The color was all root beer with the nearly-exclusive W1 recipe.
Aside from having learned from scratch how to do this less than four months ago, what am I missing here? 
I haven’t used W1…but the opaline silica definitely requires residence time to work its magic. So much so that we would recirculate over it.
I’m gonna hazard a guess…you’re flowing too fast. I suspect that a 3” or even 2” diameter CRC with the same volume would work better for you.
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i dont know…personally all the stupid fire CRC ive tried has been made with t5/silica. Most of it still has color to it though. light crc of fire material and the concentrates i have at the house right now are some of the best ive ever had…hands down period forever.
As far as my concentrates cabinet is concerned, its literally the best that its ever been. As far as im concerned, concentrates have gotten like 100% better over the last year.
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That’s interesting. So the 4” CRC is too big for the 10lb material column? Or the MVP is overkill? Should my stall time be longer than 30mins? I’ve also been experimenting with pre-soaked filter media to nullify channeling.
i think 4" is just about the smallest you want on a 10lb system in my opinion from dealing with a massive amount of filter plate and crc kit sales. that is about the max i feel on a 10lb system…
i think 3" is good from 1-5lbs
4" is good from 2.5-10lbs.
6" is good from 6.5lbs to 20lbs
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In my limited experience T5, T41, Sil60 knock out a horrifying percentage of starting material yield on first pass as well as turn terps into toast…but it’s true I’ve gotten some sub-150g ghost fluff pours.
@Killa12345 agreed. One pass through 10lb spool seems to be about all the 4” can handle most mixes.
i think with t41 your gonna loose a bit on the carbon but you can probably do better running about 8:1 gas to material.
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Temperature control is the issue. Extract cold, filter cold. If you’re not below -20C this is going to happen consistently.
I used to run a 6” CRC on a 5lb system and it was enough residence time as long as it was cold.
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You’d be really mad at me if I told you how little media I use when everything is sub -60c
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Haha, not mad at all. I suspect the solvent isn’t cooling adequately with the chiller I got. Got a 120# double jacketed solvent tank from Xtractor Depot, drove it sixteen hours north only to find that the dip tube was designed to merely chill the top 20% of the entire tank. Now waiting for engineer specs in order to custom order a dip tube from China. 
Annoying.
The dry ice method worked much more effectively but cost $1000/wk for 1200lbs. Six in one half dozen in the other, or so I thought. Will figure the solvent chilling problem out. Thanks everyone.
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Is it a regular dip tube or a coil? Compression or NPT? You should hit up Corlee Valve and Fittings, they may be able to help with a custom dip tube. They’re super reasonable with their prices and it would be a lot faster than China if they have what you need.
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Thanks much, that would be amazing and I’ll reach out to them first thing Monday to follow up this afternoon’s email.
It’s a regular dip tube that was designed to merely skim the top portion of the tank with coolant circulation. Completely useless thus far. Leaving the -40/20L chiller on overnight barely manages to freeze the multi-port lid of solvent tank.
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