Aerating with Oxygen - Home Brew Forums
Home Brew Forums > Home Brewing Beer > General Techniques > Aerating with Oxygen

Reply
 
Thread Tools
Old 07-28-2009, 12:29 AM   #1
pilotdane
Recipes 
 
May 2009
Roxboro, NC
Posts: 330
Liked 3 Times on 3 Posts



Any idea how much oxygen (flow rate, time) is a good starting point when using a .5 micron stone in a 5 gallon batch?



 
Reply With Quote
Old 07-28-2009, 12:32 AM   #2
Droot
Recipes 
 
Jun 2009
West By golly Shelby NY
Posts: 310
Liked 1 Times on 1 Posts


I don't remember the size of the stone, but the instructions said 50 seconds.

David


__________________
Yellow beer (pale ale) in keg

Chocolate stout In keg

Front Porch Porter in keg

weat beer and fruit in the conical

IPA of some kind on Deck!


I get more out of it when I put more into it. :)

 
Reply With Quote
Old 07-28-2009, 12:34 AM   #3
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,149
Liked 1622 Times on 1050 Posts


Pretty much as slow as you can get it to flow for 60 seconds. You want the wort to absorb it, not create a crap load of foam on the top.
__________________
Welcome to BrewHardware.com. I love you.
BIAB Large Mesh False Bottoms and SS HERMS COILS are IN!!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Old 07-28-2009, 12:34 AM   #4
SourHopHead
 
SourHopHead's Avatar
Recipes 
 
Mar 2007
Albuquerque, NM
Posts: 728
Liked 2 Times on 2 Posts


Oxygenate is a better word to use.

I use 1-2min for a 5gal batch. Sometimes less cuz Star San foams like mad.
__________________
FV's- Flanders Red, Munich Helles x2, Apfelwein, Hard Lemonade
SV1- Pumpkin Spice
SV2- Hard Cider
SV3- Empty
Kegs- Green Chili Ale, Watermelon Sour

On Deck: Celebration Ale Clone


"Be Good or Be Gone." EST. 1854
Shazbot Blonde

 
Reply With Quote
Old 07-28-2009, 11:46 AM   #5
pilotdane
Recipes 
 
May 2009
Roxboro, NC
Posts: 330
Liked 3 Times on 3 Posts


Thanks. I have been doing way too much than. I have been doing 10 minutes at 2 liters/minute and getting quite a head of foam on top. I was not concerned when I used an aquarium stone but with the more efficient .5 micron stone I started to wonder if I could over do it and kill the yeast with too much O2. Good news is 1 minute will use a lot less O2.

Thanks

 
Reply With Quote
Old 07-28-2009, 01:59 PM   #6
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,149
Liked 1622 Times on 1050 Posts


Since you brought up exacting flow rates (I assume you have a medical reg), I run .25 l/m for 60 seconds.
__________________
Welcome to BrewHardware.com. I love you.
BIAB Large Mesh False Bottoms and SS HERMS COILS are IN!!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Old 07-28-2009, 05:21 PM   #7
pilotdane
Recipes 
 
May 2009
Roxboro, NC
Posts: 330
Liked 3 Times on 3 Posts


You are correct it is a medical regulator. I like knowing "how much" O2 is flowing.

I have been reading articles online for several days and one will contradict the other. Here is an interesting one: MB Raines, Ph.D. - Guide to Yeast Culturing for Homebrewers - Maltose Falcons Home Brewing Society (Los Angeles Homebrewing)

Here is a quote from about half way down the article discussing oxygen levels.

"In general, it is difficult for homebrewers to achieve sufficient oxygen levels. The levels of oxygen necessary for optimal fermentation vary depending on the yeast strain. Ale strains usually need between 8-12 part per million (ppm) while lager strains require slightly higher amounts (10-15 ppm). At atmospheric pressure the maximum level of dissolved oxygen in wort is approximately 8 ppm and the saturation level decreases further as the gravity of the wort increases. Thus unless special steps are taken to introduce air or oxygen into the wort, it is difficult for homebrewers to achieve adequate aeration. Recent studies have shown that oxygenation is by far more efficient than aeration. Injection of oxygen through a 2 micron diffusing stone can actually supersaturate the wort with 10-12 ppm of dissolved oxygen being reached in 5 gallons of wort by a single 60 second blast of oxygen!"

 
Reply With Quote
Old 07-28-2009, 06:10 PM   #8
dragon99
Recipes 
 
Jun 2008
College Station, TX
Posts: 136
Liked 2 Times on 2 Posts


Where did you get the regulator? I've been wanting to do oxygen, but I'm not real excited about using the disposable canisters.
__________________
Homer: “I’m feelin’ low, Apu. You got any of that beer that has candy floating in it, you know, Skittlebrau?”
Apu: “Such a product does not exist, sir! You must have dreamed it.”
Homer: “Oh. Well then just gimme a six-pack and a couple of bags of Skittles.”

 
Reply With Quote
Old 07-28-2009, 06:14 PM   #9
dazed
Recipes 
 
Oct 2008
Posts: 106
Liked 2 Times on 2 Posts


Quote:
Originally Posted by SourHopHead View Post
Oxygenate is a better word to use.

I use 1-2min for a 5gal batch. Sometimes less cuz Star San foams like mad.
Why are you aerating your Star-San?

 
Reply With Quote
Old 07-28-2009, 08:00 PM   #10
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,149
Liked 1622 Times on 1050 Posts


I'm sure he's talking about residual starsan foam in the carboy.


__________________
Welcome to BrewHardware.com. I love you.
BIAB Large Mesh False Bottoms and SS HERMS COILS are IN!!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Anyone use the disposable oxygen tanks for aerating? Kayos General Techniques 80 03-12-2014 09:52 PM
Oxygen for airation/can I use industrial oxygen? Mainebrew Equipment/Sanitation 20 10-19-2012 07:45 PM
Oxygen concentrator for aerating beesy General Beer Discussion 4 04-04-2009 03:35 PM
Over-Aerating? sloosky Beginners Beer Brewing Forum 8 02-19-2009 04:15 PM
aerating yeast, how long after pitched should you still be aerating ? merkaba Extract Brewing 11 09-11-2006 12:54 PM


Forum Jump