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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Nitrogen gas or N20 for stouts?
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Old 07-21-2010, 06:22 PM   #1
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Default Nitrogen gas or N20 for stouts?

Someone told me that a friend of his uses N20 (nitrous oxide) to serve his stouts (in a bar) instead of nitrogen gas. I dont keg so I dont know, but I have never heard of this. Is it common, possible? What are the potential impacts of using N20 instead of nitrogen gas?

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Old 07-21-2010, 06:30 PM   #2
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I think one of the potential impacts would be that your buddies would be disconnecting the tank to take hits off of it...

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Old 07-21-2010, 06:34 PM   #3
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Hehe, yea isnt N20 what they use in the dentists office? Nitrogen is the correct answer. And it is a mixture of 25% Co2 and 75% Nitrogen. The main reason is so you can dispense beer at a high pressure through the restrictor plate in the stout tap without overcarbonating the beer in the keg.

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Old 07-21-2010, 06:37 PM   #4
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So he was probably either F.O.S. or mis-informed then? Thats what I thought.

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Old 07-21-2010, 07:36 PM   #5
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Hehe, yea I think so. he could be confused because it is a blended gas and technically not just Nitrogen. However you never know.... It may do the same thing but it would have to have the same qualities as a Nitrogen / Carbon dioxide mix which seems highly unlikey. (im no physisist though) I cant even spell it.

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Old 07-21-2010, 07:53 PM   #6
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It does sound like he is confused. One of the reasons that beer gas works is that the Nitrogen does not diffuse in the beer, but the CO2 does. Thus you can have a lower level of carbonation and still push the beer over some distance of beer line.

If you used N2O, I bet you would either end up with flat or oxidized beer.

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Old 07-21-2010, 08:23 PM   #7
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Quote:
Originally Posted by DustinHickey View Post
Hehe, yea isnt N20 what they use in the dentists office? Nitrogen is the correct answer. And it is a mixture of 25% Co2 and 75% Nitrogen. The main reason is so you can dispense beer at a high pressure through the restrictor plate in the stout tap without overcarbonating the beer in the keg.
Nitrous Oxide or N2O is what they use at the dentist, I would know, I'm a dental student but I think he is referring to N2. Simple mistake!
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Old 07-21-2010, 09:56 PM   #8
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Not to mention getting a tank of medical/food grade nitrous would be darn near impossible. And the stuff they use for cars had a bittering agent so it can't be huffed.

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Old 07-22-2010, 04:35 AM   #9
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Here's an interesting thread... http://www.homebrewtalk.com/f14/my-n...r-test-116825/

What happens when you use n2o.

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Old 07-22-2010, 04:43 AM   #10
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Well i figure it would just oxidize your beer.

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