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KB
Joined: 06 Nov 2014 Posts: 334 Location: Virginia
Working on: Next brew
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Link Posted: Sun Feb 25, 2018 1:05 am Post subject: Oxygen |
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My question is about an oxygen cylinder as it used for yeast health/growth. I do hope I'm posting in the correct forum.
How long does the 1.4 oz (Bernzomatic, red cylinder) oxygen cylinder from a hardware store last?
I've now done 5 brews. Might actually be 10 since up until today I split the batch in 1/2. One half lager and the other have an ale. For each I give a 3 minute shot of O2. Forgot to do with one of the lagers. So, I've probably used the oxygen cylinder 9 times until today. 9 * 3 = 27 minutes.
Today I made a 10 gallon brown ale. Get ready to inject O2 and the cylinder runs out after about 1 minute. Geez... this didn't last long at all.
Thoughts?
Thanks.
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GrumpyWally
Joined: 06 Mar 2015 Posts: 66 Location: San Diego, CA
Drinking: Schwarzbier, Tripwire Tripel, 2 Czech Dark Lagers, Wee Heavy
Working on: Tripwire Tripel, Roggenbier
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Link Posted: Sun Feb 25, 2018 5:04 pm Post subject: |
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I don't have any quantitative results, but I seem to recall that the "red Home Depot" cylinders I used didn't even last as long as yours did. I switched to the 20# cylinder from the industrial gas supplier and figure that a single fill should last the rest of my brewing career. I did have to purchase a different regulator though-check the various web brew sites-I don't recall which one I got mine from.
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Ozarks Mountain Brew
Joined: 22 May 2013 Posts: 737 Location: The Ozark Mountains of Missouri
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Link Posted: Sun Feb 25, 2018 6:49 pm Post subject: |
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I bought a home depot bottle got it home and it was empty, I think people mess with them in the store
_________________ "Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world."
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jcav
Joined: 21 Sep 2011 Posts: 205 Location: Central Florida
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Link Posted: Sun Feb 25, 2018 8:11 pm Post subject: |
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I usually pick up a few of the red ones in the store to try and feel the weight of them. I try to pick the heaviest one of the bunch. One time as I was picking up and feeling the weight I felt one that was extremely light compared to the others. It probably was a used empty one that someone returned and they put it back on the shelf. So if you pick out a tank that feels like a good weight, you probably have a pretty full one.
John
_________________ "Perfection is unobtainable, but if you chase perfection you can catch excellence"- Vince Lombardi
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itsnotrequired
Joined: 15 Sep 2015 Posts: 177 Location: central wi
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Link Posted: Mon Feb 26, 2018 2:11 pm Post subject: |
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i'll hit my wort (5 gal) with about a minute of gas for a 'regular' beer and more/less time for weaker/stronger batches. my cylinders seem to last a long time, maybe 18 or so batches. and those are ten gallon batches so 35 or so carboys out of a tank. i believe the key to long cylinder life is to crack the valve juuust enough to get some bubbles popping on top of the wort. anything more than that and the oxygen is lost to atmosphere.
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Fal
Joined: 29 Dec 2014 Posts: 70
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Link Posted: Tue Feb 27, 2018 1:34 am Post subject: |
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I think people are wasteful with these O2 tanks.. I usually turn it enough so I can see bubbles if the stone is just below the surface. Then, I plunge it down deeper and swirl. I may turn it up some more, but not to the point where I see tons of O2 bubbling off. I don't want to see any bubbles on the surface that way. Why? Because it's dissolving into the wort where you want it. If you are using at a rate that makes a froth on top, you using too much. All that O2 is just dispersing into the air, not your beer.
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mjo2125
Joined: 27 Feb 2017 Posts: 248 Location: Dayton, OH
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Link Posted: Tue Feb 27, 2018 2:14 am Post subject: |
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I use an oxygen "liter meter" flow meter taped to the side of the bottle. I forget where I read it, but I adjust the flow (ball float) to 1/2 l/m for 20-30 seconds. Bottle last a long time. Scale is 0 to 2.5 liters.
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