Be more effective to scope the cylinder and take pictures then cutting and possibly introducing more shit for pics.
But yea you can see definite residual in that tank from something prior.
Gross.
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Honestly, the huge issue here is the issue of no internal quality assurance of incoming raw materials.
If the solvent supplier didn’t provide a CoA and you didn’t ask for one—who’s fault is it really that Benzene ended up in the final product?
Now, if the raw material is tested and comes back clean that’s an entirely different issue.
The real issue seems to be that a bunch of extractors AND at least one solvent supplier were unscrupulous with their raw materials and instead of accepting responsibility they’re trying to find a scapegoat.
There’s no doubt in my mind that cleaning tanks helps, and there’s no doubt in my mind that a company like Cortland is purifying these gases to remove sulphur-containing compounds, paraffins and nasty volatiles.
Seems like someone introduced tainted gas into the supply chain and no suppliers or extractors checked to make sure the gas was good.
Just a lack of quality assurance of incoming raw materials.
I mean shoot, you test your cannabis before you blast it, why not the only other raw material you use to process it?
$0.02
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so is puretane 99.9998 as they claim ?
its a very big claim to make and its shipped all over the world.
you go to there website and they say all there gas is sold out.
I think outetane was one of the cleaner gases when sky lander ran the canned butane list.
I can’t see high end chefs using the stuff if it had bottles like that
and had any kind of aromatic in it.
its used as a food grade product and I know in australia at least
none of problems you guys are talking about here would even
come close to being sold to the culinary industry.
when I did my chef ticket it was all we were allowed to use.
and its massive in the patisery chef scene.
over here if your doing Crème brûlée I don’t even think there
is anything else we are allowed to use if it is going out to
the public.
what we do at home matters not.
its expensive though. very expensive but …
you get what you pay for.
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I’ve read on here that some people will distill the same butane more than one time to effectively remove all the funk that’s in there.
My question is, why don’t you guys just do a warm condenser tek style distillation with your solvents…?
With the average pressure generated in your gas distillation process in mind, calculate the point of condensation of your alkane at the pressure you intend to reach in your distillation process. Then set a reflux condenser at 20c degrees higher than that number. The heavier components will condense from the gas stream while your target alkane is distilled.
Wouldn’t slow anything down.
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azeotrope
there is a very good chance if you boil butane with benzene that
some will come over with the butane.
there even showing iso butane on the coa above.
very small amounts but it gives you an idea if the big
factories with massive fractionating collumns are still
having some other alkanes in there that separation would
take some serious gear if your going for dead pure.
the principle is sound and used a lot in the petrochemical industry
but when you get things that have slight azeotropes the plates
you need in your collumn to fractionate the compounds can get
quite large.
and that 3 methyl heptane would stick to some degree I would think too.
" * 99.9998% Pure N-Butane
- Triple Refined / 11 X Filtered
- The ONLY N-Butane made in the USA
- Far cleaner than foreign brands
- The Industry’s Favorite for more than half a decade
- This product is clean, colorless and odorless."
use it as an advertising thing and chuck the extra on top.
we only use the best culinary food grade gas from puretane.
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I wasn’t talking about benzene, talking about the mystery oil shit.
Was in response to solvent directs nasty picture of a jar
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Our issue with gas lately has been diamond formations. Odd shapes, HTE acting very foamy and thick. We used canna gas and west air and both of them have been giving us issues.
Whats really frustrating is to see everyone pointing fingers and no-one really showing proof that their gas is clean. I thought it was my job to make fire concentrates not regulate my supplier because they can’t have morals or do what they say, but apparently that’s not the case 
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Welcome to Futute 4200 ! The home of the mismatch COA !
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It’s not really mismatched if you make your own in word…….
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It’s your job to do both—it sucks to fight companies to give you CoAs with their product (and some will refuse) but you find a supplier that does it consistently without too much more of an effort on your end, they’re worth sticking with.
I’ve had good luck with solvent direct and Cannagas but I’ve also been thinking about trying out High Precision Gas
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could not get an coa that matched my lot numbers from canna gas. Gave up on asking, went elsewhere.
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Seems like yours is big enough that a company would go outta their way to make u happy. I’m sure that’s not all u purchased from them. 
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This is frightening.
What formations? Did I miss pics? begins Scrolling up
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One would think. Honestly tho most the trap guys banging through far more consumables then we do on the legal market. If your playing by the rules there is only so many people buying concentrates on the legal market so you don’t have to run nearly as much as people think. If you do your just building an inventory that will soon be worth less then what you paid to make it. We actually made that mistake about a year ago and went balls to the wall making oil thinking everyone is gonna buy it if we had it, all these unicorn 100kg deals, and then reality hit and everyone was sitting on oil.
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Puretane honestly isn’t in our market. They supply open blasters at smokeshops. Cans are kinda looked down upon when we need tanks and can recycle our gas.
They did good marketing obviously though to be seen by Australia.
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also trying to find someone to test our ln2 tank as we had weird shit happen switching from small gas n2 tanks over to ln2 generating our own n2 gas from it. All the labs I’ve called that test for cannabis products and the ones we work with most frequently and non of them had a suggestion on how to get it tested. Im sure in other industries this is quite standard. We are looking to get better and test all our consumables coming in but having a hard time finding labs to test our stuff.