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Old 03-09-2007, 07:12 PM   #1
jackbqck
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Is there a differance between foodgrade co2 and the industrial grade co2 ....and does it make a differance? thanks for any help!!

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Old 03-09-2007, 07:22 PM   #2
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Food grade is pure CO2 (filtered, etc.), industrial can contain some oils or impurities. I don't think it really matters which one you use; it should not affect the quality of the beer or your health. I get mine filled where it is cheapest (currently a fire extinguisher company). FWIW - Most CO2 you will find is the exact same that is used in the beverage industry (CO2 is CO2).

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Old 03-09-2007, 10:41 PM   #3
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thanks alot

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Old 03-10-2007, 12:15 AM   #4
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The difference has to do with the almighty buck! A place that sells "food grade" CO2 must pay for certifications to do so. Welding CO2 must be just as pure as food grade for the welds to good. Welders would never tolerate oil in there shield gas.

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Old 03-10-2007, 12:38 AM   #5
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Ditto-- I get mine filled at a fire extinguisher supplier-- In fact, got it filled today. I've also had it filled at welding suppliers, and I've never seen any adverse effect on my brew.

In short, don't worry about it. CO2 is CO2 (as was already said).

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Old 03-10-2007, 05:29 AM   #6
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I believe there is a difference in the tanks, though. Food grade tanks are supposed to be glass lined in case of backflow getting into the tank. This way, it won't corrode and explode if the backflow goes undetected.

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Old 03-11-2007, 04:09 AM   #7
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Quote:
Originally Posted by FlyGuy
I believe there is a difference in the tanks, though. Food grade tanks are supposed to be glass lined in case of backflow getting into the tank. This way, it won't corrode and explode if the backflow goes undetected.
Hmm. Not sure... I've never had the issue myself.
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Old 03-11-2007, 04:45 PM   #8
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Tagamet for CO2 tanks, I guess? got to prevent that reflux into the tank...

I doubt it. For one thing, tanks do expand and contract, and would bust the glass.

Plus, has anybody ever seen a tank labeled 'for food service use', or 'NOT....' . Anybody ever buy a tank from a HBS that had a sticker on it....

Plus, a couple years ago I heard that Medical oxygen is more polluted than industrial stuff. Seems even sick people are more tolerant than industrail processes.

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Old 03-11-2007, 07:40 PM   #9
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Do any of you use a filter of any type between your CO2 and your kegs? Is there an inline filter available, that might catch "nasties" before they can get into the keg?

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Old 03-11-2007, 09:48 PM   #10
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At my bar we use the same tanks/co2 that I use at home, which I fill my tanks via AirGas.
AirGas caters to welders and I love getting ripped off everytime I refill, they charge me like 29 for my 20lb and they are a**holes and won't even touch my 50lb cause they think it is stolen (but thats another thread).

So...It doesn't matter, like said before CO2 is CO2. But good question, it has crossed my mind before as well as a lot of others.

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