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Home Brew Forums > Home Brewing Beer > Recipes/Ingredients > Cheap N or CO2 source to deoxygenate hops
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Old 09-21-2007, 06:29 PM   #1
Tim Rhoads
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Default Cheap N or CO2 source to deoxygenate hops

Hops hate oxygen. Lots of folks simply evacuate an oxygen impermeable container to store their hops, but a better way is to use an inert gas such as nitrogen or CO2 to displace the oxygen, as well as using the oxygen impermeable container. There must be a cheap way to do this. Ideas? I am wondering if you can get a plain old propane tank filled with these gases, or some other cheap alternative. You also have to think about regulating down the pressure to a trickle. Ideas? Thanks in advance.


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Old 09-21-2007, 07:53 PM   #2
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You could get one of those CO2 chargers for about $13.


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Old 09-21-2007, 08:19 PM   #3
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You could actually buy a co2 tank, it would also come in handy when you keg.

I'm not sure exactly how you'd do that, I suppose it would depend on the container. But I suppose if you're not vacuum sealing, even removing 50% of the oxygen would be better thna just dropping it in a tupperware container or something.
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Old 09-23-2007, 07:00 PM   #4
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Hmmm, this might be one of those times where dry ice could come in handy. Since it expands something like a thousandfold upon evaporation, a couple little slivers should be enough to displace the air in most airtight containers. Just make sure that the containers won't hold too much pressure, and preferably burp it a few times too. Dry ice is something like a buck or two a pound these days, and one pound should be plenty for a large amount of hops.
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Old 09-24-2007, 02:54 AM   #5
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Am I missing something here. Just a hose run from the LP side of your CO2 regulator will fill any container you want in seconds...

EDIT: Opps... Just re-read that the original poster doesn't have a tank. Perhaps this will be a more useful response:

12g CO2 cylinders can be had at most sporting goods. Better bike stores will carry a pocket "pump" that uses these cylinders to fill bike tires. Combine that pump with a basketball needle, and you have a small and cheap way to purge hop baggies of air.

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Old 09-24-2007, 10:50 AM   #6
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I think nitrogen has more inert qualities than co2. I store hops and grain with a foodsaver, so fast and easy. Its a little expensive $120 but there's plenty of non brew uses for it.
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Old 09-24-2007, 12:59 PM   #7
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Get one of those CO2 powered keyboard cleaners....
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Old 09-26-2007, 05:24 PM   #8
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Quote:
Originally Posted by greenhornet
Get one of those CO2 powered keyboard cleaners....
Check the label. Many of those are freon and other "non-edible" gasses.
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Old 09-26-2007, 10:14 PM   #9
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Quote:
Originally Posted by photogscott
I think nitrogen has more inert qualities than co2. I store hops and grain with a foodsaver, so fast and easy. Its a little expensive $120 but there's plenty of non brew uses for it.
that was gonna be my suggestion...rather than bathe it in an inert gas, just suck all the air out and use a bag that's not air-permeable.

i've been trying to justify the cost of a foodsaver....still not there yet. but I also don't buy bulk hops.
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Old 09-27-2007, 08:15 PM   #10
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Default The solution

I appreciate all of your suggestions, but I think I have come up with a better solution which is easy and cheap too. I bought a 20 oz. CO2 tank with a valve and hose for $35 at a local paint ball establishment. Yes, N is better than CO2, but N is expensive. Anyway, I put my hops in small sealable glass jars (like old olive jars, etc.), stick the hose down into the bottom of the jar, open the valve slightly and purge the air from the jar, seal the jar, and into the freezer. Several plastics are fairly oxygen impermeable, but nothing beats glass for this use, hence our glass bottles that we put our pride and joy (BEER!) in. It works great. Twenty ounces of CO2 will last for YEARS doing things this way. Problem solved. I would put a picture on here if I could just figure out how. Next year I will store leaf hops from my garden in the same manner after I have dried them.


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