Bro at this point it just sounds like someone is intentionally contaminating all your goods 
.
Im sure as you know this has to relate with polarity/natural seperation with heat/time.
Benzenes bp is to high to just be in hplc grade solvents. Only way its in the solvent is if its reintroduced imo 
. Where or how idk
Because your doing a simple distillation, our forms of distillation/recovery arent nearly as fine tuned/sized properly for this kind of fractional seperation. Theres a reason gas distillation towers are SEVERAL stories high. Just like how seperation of water/alcohol requires more than just boiling it. Were not distilling minerals out of water. Were distilling gasses with similar vapor pressures.
Notice the multitude of azeotropes that must be seperated⌠ill give you a hint they arent all seperated at the same time/the same standard of procedures. They are also adding other things to reclaim these diff azeotropes. Gas distillation is nowhere near the same âlevelâ as we do with such large differencies in our solvent/solute.
Look up some german companies the variance in distillation/retification columns are alarming.
Last pic for reference as to why many levels of plates and diff points of collection are a necessity. Ive yet to meet someone whos done true fractional distillation in cannabis tbh.
Read the article posted above on BTEX posted by @Zack_illuminated .
Recommended pressure to recover at?
It is variable to the solvent or blend. On our systems, we typically see a basin pressure close to the resting pressure of whatever the blend is at atmospheric temperature.
For instance, pure propane we can see up to 100psi but typically closer to 50-75psi.
Butane 5-10psi (which really kills your recovery rate). Personally I would rather recover faster and easier and just run a longer cycle vs a shorter cycle and dealing with all the problems that come along with butane.
Running high pressure with butane does not yield the same results as with propane? Sounds like only propane will maintain speed at a high pressure.
All gasses move more at a higher pressure due to higher densityâŚ
But as a simple example, a 591 can move around 18lbs of butane per minute but up to 30lbs per minute propane when you are really feeding it.
The vapor pressure is the determining factor, butane has less vapor pressure than propane at the same temperature.
Well at least this âproblemâ, BENZENE is well defined.
GCMS it is either there or not there.
Quite different from âwtf=medusa crystalsâ and âwtf=fast crashâ caused by âwtf-AMINEâ and âRami Rodriguezâ will solve everything soon. Still waiting for three years for a definition to the problem. This entire problem is a testimony to the collective ignorance expressed in âButane works but no theoryââŚIâm first in line. But still very curious.
Benzene is easy.
@BigM_2
@Roguelab
@Dukejohnson
@Photon_noir
@Neutral
@Lincoln20XX
@johnbigoilco
Yeah but will this still have benzene?
I donât have a ton of confidence in your company anymore as you claim to be better than your competition out of one side of your mouth while blaming all of the issues on your suppliers out of the other.
Are you just a middleman subject to supply fluctuations like everyone else? If so claiming to have any advantage over other middlemen is just marketing bs and trade lies.
Great point, we still donât have clear answers to the 3 year old issue, tons of lip service from salesmen though
Very gas will maintain speed at high pressure but to get butane in a high pressure state takes a ton of heat
Wich is a trade of of accitic cannabinoids
And to transfer that heat to the solution is a thingy
Jacketed and 4 internal spools in solution at 80C is what I need to keep butane in the right pressure range
âŚor you could get off the mindset that butane is the way and put some propane in there⌠
Stop extracting all the garbage along with your product unless its super cold to limit solubility. Simply change the solvent properties and boom! All the problems you face can be gone! We suggest a 70/30 propane heavy blend so you can still have liquid pour outs but gain the benefit of pressure from propane.
Of course, make sure your system is rated for the pressure first.
O I got that base covered long time
No worries propane is all I use but only extract terps the cannabinoids are extracted with a fuge
Co2 dewars modified as biomass holding vessels 456Liter capacity
X8 so you have an idea of the volume 
Co2 dewar rated for use at 125psi
Pressure tested at 300psi
Most are beeing decommissioned so the tanks are available for cheap (500âŹ)
Thank you for your candid feedback and Iâm sorry you feel that way. As distributors, our primary focus is on ensuring the seamless delivery of lab supplies, backed by the infrastructure of warehouses, trucks, and our team committed to serving you guys.
In response to market demands and advancements in product offerings, we have expanded our catalogue beyond the delivery of a single type of gas from a single manufacturer. Through routine vendor audits, third-party testing, and robust compliance protocols, we will always uphold the highest standards to ensure that our clients receive the intended specification.
We now work with multiple manufacturers, providing a wide range of gases tailored to meet various requirements, including different types of cylinder cleanings and specialized filtration for intended purposes. For instance, one vendor in particular, Specialty Leasing offers a dry cylinder cleaning using abrasion with BTEX filtration in Taft, CA while other vendors like Cortera Gas in El Campo, TX offer a butane rinse cylinder cleaning along with filtration to prevent Medusa and Fast Crash. Our aim to diversify our options while we optimize cost efficiency and minimize logistical disruptions for our valued customers is at the request of our clients.
Our commitment to delivering the best products possible remains unwavering. Whether you seek top-tier products or alternative options, our dedicated team is ready to fulfill your specific needs promptly and efficiently. While you might look at us as middle men, we are doing our best to bridge the gap between manufacturers, purity standards and end-users to ensure seamless access to safe lab supply.
We are eager for the test results from Jasonâs cylinder analysis and assure you of our commitment to upholding stringent quality standards. All our vendors undergo thorough auditing and you can find these certifications on our database confirming non-detectable levels of benzene in the subject cylinders.
If 3 years later you canât tell anyone here why medusa fast crashing was happening and to this day sell product that contains benzene I donât see how the size of your supply chain mechanism has anything to do with your credibility or actual influence over the process of solvent creation besides delivery with apparently very little QC or Industry expertise on why your gas is dirty with unknown amines (or not, who knows 3 years later) or cant be benzene free.
I really appreciate the marketing pitch but i think people can visit your website for that and any involvement youâve had thus far in any topic of dirty gas has really just been damage control for your brand in my perspective without any real answers or solutions
How do the soy oil producers use Hexane year after year with out these problems of petrochemical sourcing. Or do they have the same problems with petrochemical supply and have lobbied for exemptions due to known variations.
Is the marijuana industry under separate regulation control than soy?
I mean n-hexane is a known neurotoxinâŚhow do they do it?
Think about it.
Why is every can of canned vegetables on your pantry shelf is contaminated with Glyphosate?
Because it is allowed.
Except for their diligence in providing clean filling lines and pumps, and washing tanksâŚwhat can retail gas-distributors do?
They can start by being honest as to how helpless they are to control any of the variables we need controlled
If its all dirty and no one selling it can control that what matters besides price?
@apeksuser have you seen or heard about an analysis of the gas? My understanding is that only the extract tested for benzene and there has been no analysis of the gas.
Also, have you read our blog about medusa? While there are a ton of variables inside the lab that can have an impact on medusa/fast crash, Cortera has identified several causes and is now filtering for it. https://www.solventdirect.com/post/advancements-in-butane-refinement-x-gas-perseus-gas-and-the-chemist-from-texas
Thanks @moronnabis We can also choose to work with the manufacturers that provide transparency, signed certifications and documentation on the specifications to which they manufacture product. Here is a sneak peek of what were doing with our vendors to create more visibility into the industry. SD-SC SERIES V.3.14.24 CORTERA - Google Drive
We also audit our vendors regularly to ensure they are not changing their process, source material or any other variant that could cause an inconsistency in product. For almost a decade we have been doing our best to provide transparent and reliable access to the best products out there. Iâm sorry if we have let you down.
Remember, we were in cannabis first and Solvent Direct is our way of helping you guys. We are dedicated to the success of extractors and donât service any other industries. We look forward to an analysis of the gas and not just the extract. As of now, the serial numbers that were provided by the customer are showing non detect on benzene.
I should point out I offered to analyze peopleâs gas, for free, probably a dozen times on this forum and not a single person ever asked to send a sample. So despite the talk it seems like people really arenât too interested in licking this problem.
