DIY CO2 Extraction?

I don’t know about ya’ll, but I have been watching CO2 Super Critical Fluid (SFE) with interest and have wanted to sample some cannabis essential oils extracted by that method, but the cost of conventional SFE equipment, is outside the range of most of our finances.

For the rest of ya’ll just learning of the process, let’s quickly examine what SFE is, by looking at what Wikipedia has to say about it, followed by our kicking off our affordable DIY CO2 extractor design project:

Supercritical carbon dioxide

From Wikipedia, the free encyclopedia

SCFE CO2supercriticalpressure






Standard carbon dioxide pressure-temperature phase diagram  from Wiki, plus another showing the droopy nose normally not shown on CO@ SCFE charts, but which can be exploited.

Supercritical carbon dioxide is a fluid state of carbon dioxide where it is held at or above its critical temperature and critical pressure.

Carbon dioxide usually behaves as a gas in air at standard temperature and pressure (STP), or as a solid called dry ice when frozen. If the temperature and pressure are both increased from STP to be at or above the critical point for carbon dioxide, it can adopt properties midway between a gas and a liquid. More specifically, it behaves as a supercritical fluid above its critical temperature (31.1 °C) and critical pressure (72.9 atm/7.39 MPa), expanding to fill its container like a gas but with a density like that of a liquid.

Supercritical CO2 is becoming an important commercial and industrial solvent due to its role in chemical extraction in addition to its low toxicity and environmental impact. The relatively low temperature of the process and the stability of CO2 also allows most compounds to be extracted with little damage or denaturing. In addition, the solubility of many extracted compounds in CO2 vary with pressure,[1]permitting selective extractions.

Soooo, in us’n layman’s terms,  we use plain old CO2, that we have gotten hotter than 31.1C/87.98F, while under at least 1086 pounds per square inch pressure.

In that state, the CO2 becomes a super solvent, which has higher penetration power, and can be fine tuned to focus in on specific constitutes, by varying the pressure, temperature, and by the use of co-solvents like ethanol or hexane.

Fair enough, and easy enough to accomplish several ways!  Traditionally a high pressure intensifier pump is used to achieve the required pressures.

Cryo-pumping also works.  You start with liquid CO2 or dry ice and heat it in an enclosed space.

My first conceptual of a system that was semi affordable, was a simple minded system using liquid CO2 and heat to run it at about 1500 PSI.  That eliminated the pumps normally used and by using a liquid Dewar with a dip tube, with both a gas head and a liquid tap, the need for any liquid pumps is eliminated as well.

It is designed to use readily available Schedule 180 austenitic stainless pipe and its largest component is small enough to fit in my 7″ X 36″ lathe.  My original plan was to use an existing hydraulic cylinder for my vessel, but alas, carbon steel embrittles excessively at cryogenic temperatures.

My design calls for achieving pressure by simply heating the pipe with available pipe band heaters.

Pressure was controlled using a conventional, though expensive back pressure regulator.  Please note the attached conceptual, which reflects my thinking four to five years ago.  I put the project on the back burner after reading the SFE CO2 patents for extracting cannabis, and noting that CO2 isn’t a very aggressive solvent and the patented processes used significant fluid exchange rates, as well as relatively long spans of time.

To compound that, reports from those testing SFE CO2 extractions reported poor taste and effects, so I put CO2 extraction on the back burner to just watch for awhile.

Within the last couple of years several folks have done some interesting work starting with dry ice.  The first that I noted was able to maintain high enough pressure in a test tube to keep dry ice from sublimating as it warmed, so as to extract some Limonene from an orange peel.

That led me to question whether super critical pressures were required to extract the essential oils from cannabis that we typically extract with other solvents, and further experiments by others suggests that it is not.  Some even report better results at subcritical pressures, especially with the use of co-solvents.

Sub critical extraction presents an interesting twist from a simplicity standpoint, so of course my simple mind immediately envisioned replacing the test tube with a pressure vessel containing dry ice in the bottom, and a basket of material suspended above it.  Screw down lid and bring it up to temperature with a pipe clamp heater for pressure.

Flooding is achieved by simply turning it upside down to soak the material and right side up to drain.  That step could be repeated back and forth, to soak the material and keep the boundary layers diminished.  On setting it upright the final time, we could bleed off the liquid into an expansion chamber and then to atmosphere, leaving behind the oil.

I have decided to build a 2″ X 24″ prototype, and have acquired two resources on this project that emboldens me.  One is the offer from a dear old friend, to allow me the use of his aerospace pressure and vacuum equipment manufacturing facilities for giggles and old times sake.

The other is an agreement with another old friend, who owns a cryogenic equipment manufacturing plant back east and is familiar with SFE.

We have a mutual engineering support agreement in effect, in exchange for my support on one of their projects with a former aerospace customer of mine, who is now their customer as well.

For my support interfacing their equipment with equipment of my own design and manufacture before retirement, they will support me in developing a simple minded DIY SFE system, that hopefully more of us’ns can afford to build, or have built.

So here is my first simple minded conceptual using liquid:

Here is my simple minded conceptual starting with dry ice:
OOPs, solly, watch this space!

After working all day on the drawing, my 2002 32 bit Auto Cad program is not able to access my printer on my 64 bit processor, and I’m not smart enough to figure it out, so I have to find a computer hero or heroine first.

The way my conceptual works, is the bottom of the cylinder is filled with dry ice , on top of which sits a wire basket of plant material.  Clamp on band heaters turn the dry ice to liquid, which is circulated and soaked through the material by simply turning the cylinder upside down.

After flipping it about a few times, over an extended soak, the vessel is set upright and attached to the lower expansion chamber via a hydraulic quick disconnect.  The liquid is bled off, decompressed, and the oil collected from the decompression vessel via the bottom drain valve, as well as via the detachable bottom.

Lu lu lu lu lu lu lu lu lu lu lu lu lu lu lu!!!!!!!!!!!!!!!!!!!!!!!!  Progress!

Well thank the Great Spirit for ex-brother in laws, who can sort out computer problems, so that I can print from virtual mode.  Hee, hee, hee, kept him at tossed the sister……….

Here is my simple minded conceptual of how such a dry ice system might work.  More detail prints once I have exercised some resources.

After further discussion with another experimenter, I have decided to build the system to operate at 5000 psi and below.  Instead of using schedule 160 stainless pipe, I will gun grill a billet of stainless, but will keep the bore at one inch.

Hi ya’ll!

Been out talking to folks running commercial CO2 SFE units and would like to share some selected excerpts from their letters, to keep their identities confidential:

Hi Graywolf, here is some pics of the unit i have been running for 8+ years. Our whole thing with this unit was to have maximum fractionation capabilities. 

The extraction vessel is rated to 10,000psi,  and made of stainless!! 

We use a basket to hold the material and I’m having a natural cloth bag made that will go into the vessel and hopefully allow me to extract 2x current volume. 

There are some great graphs around the net that show the combinations of pressure and temps and the resulting density of co2. In general high pressure (we go up to 10,000psi) works well in combination with high temps (around 100c) and lower pressure around 5000 psi goes well with about 60c. 

I tried high pressure and while i need to try again to confirm, there seemed to be some degradation to the overall quality and definitely the fragrance. the yield was higher and its much more efficient requiring less co2. 

I already noticed on the bit of extract that i dissolved in ethanol and then winterized and filtered, the flavor is no where near what it was before going in the ethanol. I plan to try and get the waxes out with only co2. 

I cant see any advantage to using either hexane or ethanol or a mixture as a co solvent?? the compounds are easily soluble in co2 and usually those types of things will help to extract more polar compounds such as chlorophyll. It all depends on what your goals are? maybe he is using that mixture to help fractionate out the waxes?? 

I can do a small run next week using those co- solvents and report back if i see anything magic or some beautiful separation. maybe he is just some chemical engineer using a method that was used for another project and he is trying to apply it there? 

It seems really counterproductive to use co solvents and contaminate a great extract… maybe he can only do really low pressure and he requires the co solvent to help the efficiency?? 

I found material with a moisture content of around 10% to be fine. I don’t know what the implications of a slight amount of carbonic acid could mean? 

I have heard it can make oils rancid, but have run vegetable oils at 10+% moisture and had them test very low in peroxide values in respect to oxidation and rancidity. I do not see any problems with around 10% moisture, the water sometimes comes out with the extract and is sitting on top and the few mls there can be poured off.

And from yet another hero!

I. Extraction was performed by sub and supercritical CO2: 

        Subcritical (liquid): 10-12 ºC @ 65-70 bar for approximately 6 hrs. 

        Supercritical (liqid/gas): 40-45 ºC @ 230 bar for approximately 4 hrs. 

II. Separation of fats and sugars, by winterization, chromatography and high speed centrifugation. 

This part was very critical in the purification schema and required analysis of both the anaylate and precipitate. 

III. Purification, at this point one has two options, Flash Chromatography or Wiped Film Evaporation (Short-path) 

I performed both and in both techniques, one can obtain purities in the range of   95-99% total THC (∆9, ∆8 and ∆6) with the purity of  ∆9 ranging anywhere from  78-98% depending on the parameters set. 

One last comment, probably the most important….. absolutely no petroleum derived hydrocarbon solvent was used. Except for the small amounts used for LC/MS analysis.  This was my driving force to see if it could actually be pulled off.


We are moving this project from research to active experimentation in our FY 2013, now that the shack and Terpenators projects are a fait accompli.  What I did in FY 2012, was simply research and develop resources.

It was good that I did, as further research put things in better perspective.

While I determined that my simple minded CO2 SCFE system would work, it raises a the bigger germane question of why is this trip necessary, given how effective BHO and some of the other extraction methods are.  Why spend the money for this more expensive fish trap, if we already have the fish?

The answer lies in that what CO2 SFE extraction shines at, is selective extraction.  By fine tuning the pressure and temperature, as well as using co-solvents, specific components may be extracted, while leaving behind everything else.

That is of less value when discussing cannabis essential oil extraction, in that it has been determined that it is the entourage effects of all the terpenes present, including the diterpene cannabinoids, that are responsible for its medicinal properties.  That however doesn’t mean that we can’t specifically focus on that list of terpenes.

The other thing that my research made clear, and  that is using one vessel to process the material and raise the pressure in, would result in extractions along the entire temperature/pressure curve.  Woops, no selectivity there, but easily solved by bringing the liquid CO2 or dry ice up to a higher temperature and pressure in a separate vessel, and then equalizing it with the one containing the plant material!  Easy, but the system complexity grows.

One of the interesting things that my research turned up during tete a tetes with brothers owning and operating commercial CO2 SCFE’s, and bumblers like myself whomping up DYI ghetto extraction equipment, is the wide range of processes that different operators have achieved a modicum of success at.

One operator simply took the valve out of a CO2 bottle and filled it with plant material and dry ice, before replacing the valve and heating the tank to SCFE ranges.  He then inverted the tank and vented the CO2 into a catch container, where it left cannabis essential oils behind.

He claimed his best success using co-solvents at ~5500 psi and that his product was superior to all competing, but alas, I was never able to sample it and his spamming got him banned from the forums where we shared information.

Commercial SCFE operators report successful sub critical products as low as 350psi, and another at 850psi, but I haven’t been able to sample their successes, to confirm my own opinion of product quality.  There in lies the rub of course, as there is no common measurement and each creator loves his creation.

Fortune has ostensibly smiled on us however, in that two of the operators that I have been conversing with, have agreed to work more closely with us and to supply confirmation samples.  Hee, hee, hee……………………………

Even simpler DIY SCFE C02 6-2-13

Hee, hee, hee, you have to admire simplicity.  Here is the system by jyndustriez which I mentioned, that simply puts the plant material in an off the shelf CO2 tank, and floods it with liquid C02 from a second off the shelf tank, before heating to achieve super critical state.

More information on how he accomplishes that at, but here are some pictures he has shared:

DIY SCFE C02 extraction-1-2DIY SCFE extraction-1-1DIY SCFE CO2 extraction-1-3


Progress!  We got to play with a donated SCFE CO2 extraction sample and were able to heat it under vacuum and observe the effects.

As received, the sample was in a “wax” hydrate form, and was not aromatic.  The flavor was mild, and the effects were good.

As it was a small sample, I was unable to winterize it to remove the waxes, but I was able to heat it to 115F, under vacuum, and observe what happened.

The sample out gassed significant CO2, even though at 115F decarboxylation was minimal, and never quite turned clear, due to the high wax content, but that isn’t unique, as BHO extracts are improved by wax removal as well.

On the surface however, the wax content seemed high, compared to our typical BHO extraction, so I look forward to a large enough sample to winterize and determine just how much.

Here is a starting and ending photo, demonstrating the ending wax content.

C02 sample-1-1C02 sample-1-2

To add to our excitement, last week we got a guided tour of Eden Labs during our recent business trip to Seattle!  What fun!!!

Patrick, one of Eden Lab’s bright new sales consultants, attended one of our BHO classes and subsequently invited us for a tour, so how could we resist, hee, hee, hee, snicker, snark, snort………………?

Always a pleasure to see how the pros from Dover do things, and I do likes the way they detail a package.

We lucked out in finding the original creator available and got our guided tour from Fritz himself.  Besides his latest creation, we got to see not only his original test sled, but some of the R&D that may make great strides someday, when Fritz can find enough time to finish them, between current product demands……….

Their latest all stainless creation was in final assembly and testing, and was capable of extracting not only with subcritical and Super critical C02, but also with refrigerants like butane and propane.

It was appointed well, and used pneumatic intensifiers both for the hydrocarbon pump, as well as the SCFE CO2 pump.

It also sported a unique closure system, which simply spins close and that greatly simplifies loading, as compared to a 12 bolt flange with a torque wrench.

The vessel itself uses a Schedule 160 stainless core, but adds water jackets, so as to permit the use of a commercial heater/chiller for temperature control.

The unit that we looked at, had a $60K base price, plus the price of the hydrocarbon extraction capabilities.  Not cheap, and more complicated that most folks should attempt at home, but if you need a machine capable of a quality extract, in commercial quantities, you will need to step up to a system of this caliber, which includes pumps to cycle the C02, and C02 recycle to recover it afterwards.

Fritz did note that one of the things on his list of thangs he is juggling, is a smaller lab sized unit, which fills the market window for a smaller unit that doesn’t recycle.  Looking forward to see what comes up there!

From a process perspective, Fritz shared that the aromatic extractions are best done at low pressures and as the pressure goes up, so does the rate of chlorophyll extraction.  Based on his and other input, I will focus on the range from 800 psi to 3500 psi.  While I’ve heard operating parameters up to 9500 psi, the lower ranges sound more believable.

As unbelievable as it may sound, ah think sometimes operators shuck me, cause they are trying to protect process secrets and lead me astray.


Lu lu lu lu lu lu lu lu lu lu lu lu lu lu lu!!!!!!!!!!!!!!!!!!!!!!!1  The Great Spirit smiled and JYNdustriez loaned us a CO2 extraction setup and will show us how to use it, when he visits to watch Dr. Fischedick’s lecture on 11-2.

I’ve also located a local brother with an Eden Lab machine, who is amenable to experimentation, so things are heating up in the area of CO2 extraction at Skunk Pharm Research.  We will have machines from both ends of the price scale to experiment with.

Sound CO2 has also extended us an invitation to visit, and they run Apeks equipment, soooo even though our CO2 project was slow getting in motion this year, it looks like it is finishing with a bang.


Hee, hee, hee, check out JYN’s latest link on DIY SCFE CO2

510 responses to this post.

  1. Very nice,i know also other site!!!


  2. I do not want to sound presumptuous, but my proprietary machine is awesome. It is cheaper and more efficient than any other manufacturers’ that I have come across. We can vary the size of the extraction vessel and pumps, but my current rig holds approximately 2-4 lbs. I can do ten runs a day by myself. It takes 1.5 minutes to get supercritical and start cranking. Its fully automated, except for filling the extraction vessel with herb, and connecting the co2 bottle. It will run any pressure between 1000psi and 5000psi. It is a laboratory grade piece of equipment. I sell, lease and rent the machines.


  3. I would like to thnkx for the efforts you’ve put in writing this site. I’m hoping the same high-grade site post from you in the upcoming as well. In fact your creative writing abilities has inspired me to get my own blog now. Really the blogging is spreading its wings rapidly. Your write up is a great example of it.


  4. Posted by Midnightdabs on January 23, 2017 at 7:58 PM

    Interesting but a little out of date


    • Do you know of a do it yourself system more up to date? We stopped exploring passive extraction, once we understood its limitations, and so haven’t kept track of bright new innovations that contradict that position.

      I’ve seen developments in small SCFI CO2 units using pumps that are of note, but are not DIY.



  5. I am no longer certain the place you are getting your info,
    however great topic. I must spend a while studying much more or understanding more.
    Thank you for fantastic information I used to be on the lookout for this
    info for my mission.


  6. Posted by tom on January 3, 2017 at 1:26 PM

    What is the best CO2 machine made


    • Posted by David on January 10, 2017 at 10:19 PM

      I think that depends on “best for what”? There’s the usual Apeks, Waters, etc machines but I recently read about new startup in California that seems to be doing innovative things with high-pressure machines (up to 5,000 psi): Applied Extracts ( Can’t hurt to talk to them I guess.


    • I can give you some good information.


    • Posted by Matt on January 28, 2017 at 6:02 PM

      Does anyone have experience running an Infinity Supercritical extractor? There’s one posted on eBay for $59k for a 10L. I’m shopping for used, or refurbished, co2 extractor(s) and this is one of the few machines I located thats not an Apeks of Eden.


  7. Posted by Steve on December 27, 2016 at 11:07 AM

    The information here gives me a good start for my research on this subject. What I am looking at isquality of product is being produced both as a consumer and a possible business model. In my opinion a good diagnosis starts with good product, that’s how we get quality.


  8. Posted by Doobie on November 22, 2016 at 9:58 AM

    Congratulations on your purchase! First, don’t over tighten anything and don’t pack the tube. Make sure what you run is 100% dry.
    I typically run one tube of high quality stuff without decarbing to get the terpenes while running at 1100-1500 psi 45c. Then 3-4 runs of decarbed material to get all your psychoactives. You’re most potent extract are going to be after decarbing (baking at 250 degrees for 45min) and then running your ground up material in a full but not packed tube At 3200 psi and 60c or 3600psi and 55c you’ll get almost pure THC-A jelly.
    Now, you’ll want to winterize with alcohol to remove the wax and lipids. I’ve also heard from another Super C user that you can skip the winterization process by using a centrifuge.


    • Since decarboxylated material shouldn’t have any THC-a left over, wouldn’t the jelly ostensibly be in the phenolic diterpenoid state? IE: THC delta 8 and 9.


      • Howdy, do you want to know Chinese Supercritical CO2 Extraction Machine? This is Richie from Shanghai, we manufacture such machine and have customer base in Amercia. If you have interest, feel free to contact me at or by Whatsapp/Skype/Wechat (ID is +8615921680965).
        Also weblink on Alibaba for your checking:


        • Good morning Richie! I infer you haven’t read or spam policy, so would like to draw your attention to it, published Nov 15, 2016 on our front page.

          We welcome resource information for our readership, but this isn’t a sales platform, so I sent all of your duplicates of this post to the spam locker.

          Do you have any links for the readers to checkout as an interim step, to better understand the scope of your offerings?



  9. Posted by Thc-pharma on November 8, 2016 at 8:28 PM

    Hello im looking for Co2 extractor. Im based in europe.
    im looking for a machine with a minimum capacity of 3+ liter vessel.
    looking forward to hearing from you!


  10. Posted by on October 28, 2016 at 6:09 AM

    Just got my 1 litre machine up and running. What temps, pressures and flow rates is anyone using to maximize yields?


  11. […] and the pressure requirements to put it in this form is one of the reasons Co2 extraction systems are usually so costly. People choose to learn how to make wax dabs without butane of this type usually because Co2 […]


  12. Posted by Wayne Kinne on October 17, 2016 at 1:15 PM

    Do you have to dry your plants first or can thy be ran fresh? Some one once told me you could extract without drying first, wondering if true. ty


    • I’ve never tried to process fresh material SCFE CO2, so will have to leave that question open to readers who both have the equipment and that experience.

      You can extract fresh material using non polar solvents, by freezing it first and chilling the solvent to subzero temperatures.



    • Posted by Doobie on October 28, 2016 at 9:19 AM

      I think you’ll get about a shot of weed soda loaded with THC if you extract at 3200 PsI 60c. Please let me know how it goes!


  13. Posted by Hossam mohamed gamal shaaban on August 31, 2016 at 6:37 PM

    Dear sir
    Ask about the most extraction way of cannabis oil that effective in extraction all compinent , high productivity & economical
    As i have a big project with government here in egypt
    Also if you provide these machine please send me quotation of different capacities line


    • Hossam, please feel free to contact me and send me your e-mail address and I can send you more info about Revolutionary, high production units. We can custom build any size unit to suit your production needs. Thanks in advance.


      • Posted by Mark on December 16, 2016 at 4:17 AM

        My firm recently moved to a large space with 5,000 ft. unused at the time. We are ready to purchase 2-3 different CO2 extractors to complement our Apeks system. If anyone is ready to sell an extractor(new, used, or refurbished) please contact me at Thanks


    • Skunk Pharm Research provides information as a public service, but sells no equipment.

      To your question, the lowest cost per gram to extract quality meds in volume that I’ve found, is closed loop butane extraction. is the company now building the WolfWurx Mk IVC and VC designs by Graywolf.

      What we found with our passive SCFE CO2 extraction, is that it extracted over the whole heating/pressure curve, so we lacked precise pressure control.

      CO2 is a small molecule, so it requires a lot of flow to extract effectively. Without pumps to recycle existing CO2, more than our passive system volume.

      Our passive test sled lacked the ability to recover the different fractions on decompression, which active systems make effective use of.

      An experienced SCFE CO2 consultant, not employed by a specific equipment supplier, whom can elaborate on those issues chapter and verse is Paddy at:



  14. Posted by Brandon B. on August 30, 2016 at 11:38 PM

    Hello, im currently managing a lab that uses an eden labs LLC custom built 3 exstraction chamber co2 supercritical machine, in southern California. We need help refining to a finished product, we have a large industry rotoary evaporator and much more equipment. Im seeking an individual to help us train myself and a few other lab techs in the refining process for a handsome reward/possible % share holder or both. Please contact me asap if intetested 909-534-7274


  15. Hello,
    My name is Raquel Ernemann and work for Feyecon in The Netherlands. We have been working over 10 years on cannabinoids and plus 20 years on supercritical CO2 with 10 different spin-offs. We are selling our pilot scale quipment 100L, with two extractors and two separators, automated (one person is needed to run), and fully comissioned for the extraction of cannbinoids (CBD/THC). Anyone interested?


  16. Posted by Arnold Sears on July 16, 2016 at 7:54 PM

    Pre shopping for my extraction lab doing my due diligence for all of the lab equipment I’m going to need Whitney price list


    • Give me a call, I’d love to tell you about our systems or help you in making a decision on a system. A lot to choose from and I can at least give you some additional input on what is on the market.



  17. We have sold the Waters SFE100


  18. We have a Waters SFE100 Super Critical Fluid Extractor purchased new in 2011 and never used.It includes a new Accel Chiller. Original cost over $65K, will take the first $20K offered!


  19. Posted by Ky on March 14, 2016 at 3:03 PM

    We have a slightly used (less than a year old) Waters SFE 2X5 co2 extraction system for sale. Perfect condition, and with service agreement. Email for more information. Thanks


  20. Posted by Joe D on February 9, 2016 at 12:51 PM

    I am looking for a CO2 extraction machine in Boston, MA area or a DIY method to build my own as I currently make my own RSO for cancer treatment (with success I might add) and would prefer to do CO2 extraction instead as buying it form dispensary is extremely expensive plus I can control the dosing and levels of various cannabinoids needed for my RSO mix as I currently do using Rick Simpson’s method. Please email me at


  21. I cannot split with you, what I can do is rent you my extractor and my time to show you how not to break it. I can run between 2 and five pounds. If you’d be interested message me back.


  22. Posted by mike on February 8, 2016 at 2:17 PM

    looking to extract about 40lbs, without buying a machine is there somebody that will do it for percentage of end product?


  23. Posted by brian on January 15, 2016 at 11:11 AM

    I still check from time to time. My co2 machine is kicking ass. If someone can tell me how to upload pics, then I would love to share them all with you.


  24. Posted by Tank on January 6, 2016 at 1:49 PM

    Is there any way I can get directions, parts list, and schematics to build a good reliable safe system because I really don’t have $36,000 to spend on the systems that r for sale these days. I don’t think I would spend it if I had it. But this method sounds promising. If any body can give me any info it would b greatly appreciated. Email me @


  25. Posted by Danny on December 28, 2015 at 1:45 PM

    Can you turn the co2 extracted liquid to shatter?


  26. Posted by bongstar420 on December 4, 2015 at 4:57 PM

    Why would I do CO2 if I have to dewax and purge anyways?


  27. Posted by Kari on November 30, 2015 at 12:57 PM

    Not bad but in need of something a bit more substantial.
    Hoping to build one if I can find what I seek.
    But thank you


  28. Posted by doug on November 30, 2015 at 9:35 AM
    check out this. now 3200. last year was over 5k


  29. Posted by Monty on November 12, 2015 at 8:48 PM

    I would like more info interested in purching system


  30. I have a PSICO2 extractor that is nearing completion and is available for purchase. Be a part of a growing family using PSICO2 Extractors and experience CO2 extraction like it was meant to be!


  31. Posted by brian on September 22, 2015 at 11:06 AM

    The law does not allow for any type of bho extraction without a mips(marijuana infused product) license anymore. Even closed loop. They made it a class 2 drug felony. Which can carry a sentence of 8-24 years. We designed our co2 system similar to Edens or apeks. It uses a plc with custom and adjustable programs. A heater pump and chiller. If anyone has any info about using co-solvents, I would greatly appreciate it.


    • Posted by wkinne on September 22, 2015 at 1:28 PM

      is it hard to get a mips license?



      • Posted by Randy on November 14, 2015 at 4:32 AM

        There should be any issues with just buying the system as essential oils from many different kinds of plants are made with this method. The vanilla I use is like that and one of the best on the market.


    • If it’s Co2 extracted product then it doesn’t come under restrictions for butane extractions. One of the things I love about Co2 over N-butane, cleaner, safer & legal. 😉 Cheers!


      • Posted by bongstar420 on December 4, 2015 at 5:00 PM

        CO2 may not be combustible, but 5,000-10,000 psi is not “safer”

        Also, where is the evidence that a few micrograms of Butane is “unhealthy?”

        I don’t know why people want BHO or CO2 oil. I get just as high hit for hit from straight flower


        • Posted by wkinne on December 4, 2015 at 5:04 PM

          ah no, you can not get as high hit for hit, good BHO will send you to a whole new place.


        • Posted by Danl on December 12, 2015 at 7:29 AM

          Come on man, hash has like anywhere from 50%-99% thc content vs what? 10 to maybe 30% thc in the buds alone. 1 hit of hash is like smoking a whole joint at once. IMO


        • Even at the higher pressures it is not as much of a hazard because nothing would ever explode with CO2, it might rupture, but never explode like butane Even small vessels when ignited will explode, causing casualties and damage. Also when butane is used, it often leaves behind heavy metals, which cannot be removed. These have been found in Colorado, and they are going through a huge recall. In 2014 Americans used 119K barrels of butane a day, nearly doubled since 2007! Butane hash extractors, though they make beautiful product, are creating a devastating impact on the Environment. This is a huge issue, and it is being overlooked for the sake of making money. Not only are the amounts being used a problem, it’s also a problem when butane is not burned and it is released into the atmosphere it reacts with the ozone layer and damages it. So no, not all extracts are created equal.


  32. Posted by brian on September 22, 2015 at 7:11 AM

    Hey I love your site. A long time friend and I just built our first co2 SFE. I have two closed loop butane units as well. Law changes in my area forced us to move over to co2. I have been running bho for a long time, and am wondering if there are any tricks or tips that you’d have for co2. I am based out of colorado. If you ever find yourself here, then please come hang out and we can mess around with the machine and burn one.


  33. Posted by Mike Mc wain on August 28, 2015 at 8:38 PM

    I enjoyed this, your humor is fresh brother. I would be proud of 85 %. Grins.


  34. […] DIY CO2 Extraction? | Skunk Pharm Research LLC – I don’t know about ya’ll, but I have been watching CO2 Super Critical Fluid (SFE) with interest and have wanted to sample some cannabis essential oils extracted … […]


  35. Posted by doobie on August 22, 2015 at 11:29 AM

    Awesome! I havent ran at that yet. Have you been on the OCO forum? There are a few receipies on there as well. Ive been getting great results by decarbing for 1hr and then running at 60c for 1hr without flipping the tube. Seems to get everything out!
    Id really like to try making dry ice keif and then only loading that into the extraction tube for a super extraction. My only attempt at this failed though as I over packed the tube and the co2 channeled causing an incomplete extraction and the need to drill the over packed material out of the tube. Email me at and Ill get you on the OCO owners forum if youre not already on.


    • Doobie, I did look on the oco labs forum once upon a time for some reference points. I started running my own recipes and haven’t looked in a while. The keif super extraction that you’re wanting to load has work successfully for me, load a filter with flower material about 2 inches then Keif followed by a flower plug at the end about 1 inch….:) thank you for the email address, I look forward to chatting!


  36. Doobie hello again, here is a recipe that I had left behind a simple run down is going to be 55°C let that soak for 20 minutes after the temperature has been reached fluctuate between 3500 to 3600 psi for one hour. This should also increase your overall yield!


  37. Posted by doobie on August 21, 2015 at 10:29 AM

    Wow! Thanks a lot for the reply! Im not able to locate the post. I did a search on the whip film distillation and Im just finding a bunch of very expensive lab equipment. Please help direct me as Id love to get a better retrun out of this!


    • Doobie, that lab equipment for the whip film evaporation technique would be some nice stuff! I’m a country boy myself so I do a little improvising. What you’re going to want to do is get your silicone mat a big one and place your oil on it while taking a hair dryer and holding it over monitoring as to not get too hot while using your favorite dab tool to stir the oil. Over time you will notice a honey color with a more oily texture, this is the water evaporating out of the oil concentrate :-)! This technique alone in itself will work to separate water, but I have found that using a centrifuge and this technique works most excellently. The centrifuge will run you about $175 on Amazon you will only need a single speed 4000 RPM machine. Hope this helps, concentrate the world my brother!
      Wizard out:))


  38. Posted by Doobie on August 20, 2015 at 10:44 PM

    I’m running an OCO Super C and the flavors are amazing and the winterized oil done right at low temps using some of grand pappys shine makes the tastiest dabs in relation to actually flavor of your sample material. The part that sucks is how long it takes and how little its capacity are. you can’t really make enough to share enough that everyone is getting crazy about it.


    • Hello Doobie, I have posted some recipes below and a few techniques for you to look at in reference to more treats for sharing :-).. It will be in the old comment section a centrifuge and whip film evaporation technique will leave more behind than winterization. Winterization leaves an excellent product and most effective in achieving platinum purity. Just robs from the overall mass via the process!!


    • Posted by Bernice on January 26, 2016 at 4:39 PM

      Just purchased on OCO Super C and waiting for delivery. I’m viewing this forum looking for temperatures and pressures for various terpene extractions. Would love more details of your experiences.


      • Posted by Ak Blizzard Wizard on January 26, 2016 at 11:45 PM

        Hello Bernice, up above you will see the pressures temperatures and soak time that I have left for Doobie. I would try these verses any that Oco lab supply as I have not had good results with their recipe . I would also look into spare parts to have on hand so you do not have any downtime when running. A brass screen it’s going to be most important along with motor mount for the compressor motor. I would also get a spare tube and an additional super O-ring kit. I have had great luck and success dealing with this company. I would also get the spare O-rings that fit in your pressure block. I hope this helps! Please feel free to ask any questions and when I come across them I will give feedback.


    • Posted by Yoda Brain on November 22, 2016 at 9:05 AM

      Hi Doobie, I just got an OCO Labs Super-C. What are your setpoints? I’m getting nothing but a bunch of opaque yellow stuff, often with no potency. Also, what do you mean by using “alcohol”? Any help would be greatly appreciated. Thanks!


  39. Posted by Red barron on August 17, 2015 at 8:50 AM

    Edit, its paradigm


  40. Posted by Red barron on August 17, 2015 at 8:45 AM

    The two systems that seem most interesting yet dont get mentioned anywhere near the amount of times edan or apeks does are the super c and the paradym systems. How do these compare?

    Thank you all


  41. Posted by Red barron on August 17, 2015 at 8:43 AM

    I am interested in more info about the paradym systems machine. What is the cost? How much plant material can be run with it? And how long does it take? What is the final product like, any refining? Taste?


  42. Posted by bayareafarmer on July 31, 2015 at 12:35 PM

    I have owned the Apeks 1500-L machine and it was nothing but problems. Apeks also just released an “upgrade” to fix problems they are having. A little late Apeks!


  43. Posted by Ivan on July 27, 2015 at 7:22 PM

    Looking for a c02 extraction machine here in Toronto ON Canada. email me at


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