Author Topic: oxygenation  (Read 5543 times)

Offline denny

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Re: oxygenation
« Reply #15 on: December 01, 2011, 09:44:30 AM »
How does that mixstir get the O2 in the wort?
Unless you have to splash a lot.
And do you have trouble with the foam up?

It pulls surrounding O2 into the wort.  And foam up is not a problem.  I run it until the fermenter is full of foam.
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Offline bluesman

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Re: oxygenation
« Reply #16 on: December 01, 2011, 10:34:27 AM »
I also use the mixstir for aerating the wort. It's fast and easy to use. I've also used pure O2 from a sintered stone, but have switched back to the mixstir. Both methods work well.
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Offline theDarkSide

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Re: oxygenation
« Reply #17 on: December 02, 2011, 08:14:55 AM »
Is the Mixstir powerful enough to get a whirlpool going in the kettle ( 10 gal ) or would a paint stirrer be more appropriate for this?
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Offline denny

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Re: oxygenation
« Reply #18 on: December 02, 2011, 09:25:36 AM »
Is the Mixstir powerful enough to get a whirlpool going in the kettle ( 10 gal ) or would a paint stirrer be more appropriate for this?

Either would work well.
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Online dzlater

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Re: oxygenation
« Reply #19 on: December 02, 2011, 04:47:17 PM »
I pour wort through funnel into Better Bottle, put a tennis ball under the center indent in the BB and swirl it.
like this http://www.better-bottle.com/products_master.html

I have been pondering this for a while the Mix-Stir, are sold as wine "de-gassers" so if it it's degassing wine how is getting oxygen (which is a gas) into the wort?
« Last Edit: December 02, 2011, 05:20:33 PM by dzlater »
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Offline hopfenundmalz

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Re: oxygenation
« Reply #20 on: December 02, 2011, 07:58:21 PM »
I pour wort through funnel into Better Bottle, put a tennis ball under the center indent in the BB and swirl it.
like this http://www.better-bottle.com/products_master.html

I have been pondering this for a while the Mix-Stir, are sold as wine "de-gassers" so if it it's degassing wine how is getting oxygen (which is a gas) into the wort?

Mix-stirs are also used on mead for the same reason.  You get a large amount of foam after a day of fermentation when you de-gas.  You also get a whirlpoo/splashing action that helps get the O2 from the air mixed in.  This is a "direct acting stir plate",  same gas exchange happens as in the flasks on a stir plate.  But faster.
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Offline maxieboy

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Re: oxygenation
« Reply #21 on: December 03, 2011, 07:09:35 AM »
Is the Mixstir powerful enough to get a whirlpool going in the kettle ( 10 gal ) or would a paint stirrer be more appropriate for this?

The plastic blades don't stand up to the hot wort, they'll soften and wrap right around the shaft. Ask me how I know...
 I did make some replacement blades from stainless steel but never used them. I built a hop strainer that's so effective that I don't need to whirlpool.
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Offline maxieboy

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Re: oxygenation
« Reply #22 on: December 03, 2011, 07:16:32 AM »
I also use the mixstir for aerating the wort. It's fast and easy to use. I've also used pure O2 from a sintered stone, but have switched back to the mixstir. Both methods work well.

I used O2 with a stone for a while but my finished beers seemed to have a "washed out" character. Maybe I over oxygenated. Went to the mix stir and haven't looked back. O2 in the air is free. Pragmatism wins again.  ;)
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Offline Thirsty_Monk

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Re: oxygenation
« Reply #23 on: December 03, 2011, 02:56:32 PM »
O2 in the air is free. Pragmatism wins again.  ;)
I am the the same opinion.
I use venturi tube to aerate my wort.



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Offline bo

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Re: oxygenation
« Reply #24 on: December 03, 2011, 03:00:08 PM »
O2 in the air is free. Pragmatism wins again.  ;)
I am the the same opinion.
I use venturi tube to aerate my wort.



http://www.dripworksusa.com/store/mazzei.php

I agree. I have O2 around and I never use it. I pump wort into the fermenter and I squeeze my tube to create turbulence.  :D

Offline punatic

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Re: oxygenation
« Reply #25 on: December 03, 2011, 04:43:02 PM »
Be careful Bo!  You could go blind doing that. ;)
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Offline bo

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Re: oxygenation
« Reply #26 on: December 03, 2011, 09:29:56 PM »
Be careful Bo!  You could go blind doing that. ;)

Maybe, but it's so fun gettin' there. :D :D :D

Offline Gribble

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Re: oxygenation
« Reply #27 on: December 04, 2011, 02:38:56 AM »
On my bigger beers I'll use my inline oxygenator (a T with a stone held in by compression fitting) as I pump to the conical but for smaller beers I usually close the outlet valve to create turbulence.
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Offline phillamb168

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Re: oxygenation
« Reply #28 on: December 05, 2011, 02:51:16 AM »
O2 in the air is free. Pragmatism wins again.  ;)
I am the the same opinion.
I use venturi tube to aerate my wort.



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:-O

so cool. Thanks for the link TM.
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Offline narcout

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Re: oxygenation
« Reply #29 on: December 05, 2011, 05:54:32 PM »
I've had really good results with the stainless wand and stone I got from Williams Brewing and the red disposable oxygen cannisters from Home Depot.

It sounds like mix-stirs do the job as well, but there's a lot of pet hair floating around my house.