Benzene in butane

Yes we have said we distill mutiple times in each thread.

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question for everyone “distilling” their gas: are you doing so with heat or a recovery pump?

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Heat, passive.

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If you’re paying for instrument grade gas (99.5%+) with non detectable levels of benzene delivered in a decontaminated cylinder, the variable contaminate would be consistent with your coa and this concept of wasting your time and exposing your team to cancerous petroleum waste accumulations while distilling “mystery” oils with detectable level of benzene in your collection pot would be a non issue.

If you are buying instrument grade gas with non detectable levels of benzene re-contaminated by dirty cylinders that are being topped off without any decontamination the same way industrial lp gas suppliers have been topping customer returns for 50 years without decontamination, then carry on…

Those poor folks in Texas back in February.

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The variable contaminant is inconsistent with the COA. Contaminant is still present. Contaminant not identified on COA.

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Well that is just gold. Thanks for the midday laugh @GasGuy-QEG. (Not laughing at these folks, I was one of them, that storm sucked.)

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Our gas is direct from the refinery, never has benzene or other btex
We have CoA and testing data available, ship direct
website or dm, our sales director responds to every inquiry

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Looks like there needs to be a new testing standard for the gas suppliers that want to sell to the cannabis industry at this point.

I’m guessing you get your gas from Cortland:
Cortland Energy, LLC

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Extraction guy,

I agree.

I don’t blame hobby extractors for buying on price and not caring about hydrocarbon cross contamination. However, QC managers of licensed processing facilities ought to ensure the solvents they receive conform to both the advertised spec of the gas and the analysis they receive with the delivery. An occasional third party analysis is warranted.

One supplier claims they test hydrocarbons for contamination to the part per billion, never realizing that the limit of quantification of their equipment might be 10 parts per million or more.

I’d be happy to speak with and advise any QC person - without giving a sales pitch. I don’t care where people get their gas. An educated consumer makes a good customer.

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Your website states your gas comes from El Campo Texas so we know where your gas comes from. Also this is posted in this thread 26 days ago:

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I assume you’re referring to me. Since you declined my invitation to tour our facility and learn more about our practices and procedures, I’m surprised you feel informed enough to comment on the equipment we have and methods we employ.

Regardless, while you make a valid point as to most GC’s built in detection limit of ~10 ppm using the response factor generated by the external calibration standard, our GC is configured to reach well below that using a longer capillary column and split ratio. This enables clear peak detection far below the 10 ppm range. We then use an internal low range calibration standard to create response factors to permit quantification by hand calculation.

The peak area of a 0.001 ppm result is well into the tens of thousands (effectively, ppb). As such, as we identify a component of interest below this, we use our low response factor and manually integrate the peak to provide an area. Once that sample demonstrates repeatable results, we take it to a third party MS to further identify.

Here’s a visual example of such method:

This is a sample pulled from a truck prior to approving purchase. Our raw GC data labels trans-2-Butene as 10 ppm, while cis-Butene is below quantification. However, the areas of these olefins are 31,000 and 15,000, respectively. As explained above, in a case such as this, we would use our low concentration standard to either a) test again ignoring the large bulk peak or b) use an external response factor to manually quantify the results.

Great point to bring up and worthy of explanation but we are fully familiar with the operation and limitations of our equipment.

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Doesn’t everyone just about

@thcgas I think is one the ones that doesn’t though…I thought they said that

Maybe it’s @GasLogix-Adam or @GasGuy-QEG but one them I spoke to doesnt

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We do. THC does as well. @GasGuy-QEG is a Diversified buyer per his profile.

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Yeah I knew one y’all didn’t get from Cortland and has what they believe a better gas…I’ve tried all of it last year. I been through every company but adchem

My favorite was @GasLogix-Adam great customer service and he took very good care of me. But according to where I am in the intercontinental USA we have to use what we can get unfortunately

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Appreciate it homie. We’ll get you serviceable eventually. I know it’s a pain in the ass but we don’t want to outgrow our capabilities and let the quality of either the product or customer service fall off for the sake of increased short-term profitability.

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U did service me I had to pick it up at Depot but u got me like 2 60lb tanks

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Amen.

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Oh yeah for sure, I just meant on a regular basis :+1:

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