Did you ever test a London? I might be getting some soon and might be able to send you one.
The bag is to contain the butane and residual, and it does it well. I've never had a leak, and never found even a smidgen of of residue on the outside of the bag or in the evaporating dish. That some brands of butane have non greasy, clear, and smell free residue indicates there is no interaction, and if there was, so what? Are you imagining the residue combining with something in the composition of the bag and then escaping into the atmosphere like magic?
Thanks for following the thread!
I'd rather make my own product where I know what went on during the extraction, the thing with the EcoGreen hose leaching cinched it for me. Just my opinion, carry on...
"Proof of Product" Don't open blast.......those days are OVER. Nobody should be consuming openblasted concentrate that will clearly have Mystery oil or "residue".
Distill whatever butane you have and your good to go.
Buying proper hosing would solve that issue for you. I'm not sure I understand, are you suggesting that using canned tane is better?
I'm not sure there's much difference after distillation, but I'd much rather starting with a relatively pure product, and then putting some effort into routing it properly (ie through hoses that will not leach)
I'm definitely interested to see the results of GreyWolf's test. I'm using Power 5 at this point, so Ecogreen would be an affordable step up in quality, particularly if I gain the ability to distill and recover.
/Speaking from a point of view of someone that desires a closed loop and is trying to avoid unknown petroleum products, and has not tried any of Ecogreen's hoses.
The 'lighter refill kit' works smooth! After a flush of the system, I shot to the 500ml line on my Mason jar, about double the amount of a standard 300ml can of butane. A gummy, yellowish residue, which stank similarly to, but stronger than almost all the canned butane I've previously tested was left behind. It was still stinking after two vac purges, so I purged it again... The result was 0.076g of non volatile residue. Half that, 0.038g for comparison with a standard can of butane.
EcoGreen butane had 0.038g of residue (in an ~300ml can's worth)
EcoGreen Industries, China, 30lb n-butane tank
Going to be second from the bottom on my Best to Worst canned butane list, I suggest this not be used for open extractions.
This isn't the first distributor to be taken by surprise... my condolences.
The retest minus the 'lighter refill kit' went fine, but I forgot to shake the tank before starting this time, so I put the tank back in the fridge and will do another test this afternoon, but wow, what a difference!!!
Again I shot to just over the 500ml line on the Mason jar, which is about double the volume I see with a standard 300ml can of butane. The residue was not gummy, and not yellow, rather clear with a hint of white, but still had a fairly strong smell, the weight was 0.003g, or 0.0015g for equivalency to a 300ml can of butane.
EcoGreen butane #2 had 0.0015g of residue (in an ~300ml can's worth)
EcoGreen Industries, China, 30lb n-butane tank
I suggest everyone test their hoses under pressure for residue, unless you're running unlined SS corrugated.
I will do one piece of hose testing myself, I ordered a Yellow Jacket 21624 Plus II 24" charging hose to replace the hose that came with the EcoGreen 'lighter refill kit.'
Do the other common refrigeration charging hoses being included with closed loop systems have a nylon permeation barrier?
"1/4" PLUS II™ hoses are UL recognized assemblies (File SA9737)
The nylon permeation barrier meets SAE requirements J2196 for CFC, HCFC and HFC refrigerants
The moisture barrier provides improved resistance to moisture migration which contaminates expensive refrigerant
1/4" RYB PLUS II™ hoses are rated for 4000 psi (276 bar) minimum burst and 800 psi (55 bar) maximum working pressure and an operating temperature of -20° to 180°F (-28.8° to 82.2°C)
Minimum bending radius: 6" (152mm)
Made in the USA"
http://www.yellowjacket.com/product/700
They also make a heavy duty version of the same hose with a tougher outer coating.
I was told by a representative of Five Zero Trees in Portland that EcoGreens NButane was "refrigerant grade" and not as good as say Lucienne from a can. Our #30 of R600 was not cheap, but I will happily and safely dispose of it if it is not safe to make medicine with.
If however, GW and SKL's respective test hold true and there is no inherent inferiority to R600 refrigerant versus canned lighted refill butane, I think it should be important for patients ts growers and the like to be aware of the bias and falsity held by at least some of the staff at this club which could lead to substandard care and products for patients.a