Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > General Techniques > Interesting experiment on the effects of areation
Reply
 
LinkBack Thread Tools
Old 03-02-2007, 03:21 PM   #21
Cheesefood
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2005
Location: Poo-Poo Land
Posts: 6,809
Liked 32 Times on 22 Posts

Default

Quote:
Originally Posted by EdWort
I'm stoked. My areator system from Williams Brewing arrives tomorrow. I went with theirs because of the stainless tube which gets the stone to the bottom of the fermentor. All the others use the stupid plastic hose which curls up and does not go where you want it.

Great stuff Bobby_M!
I have that one, Ed, and it's nice. The ability to move it around and aerate all sections - and stir while aerating - is a bonus.
__________________
Past Winners: Caramel Cream Ale #1, Hoegaarden Clone, Boom-Boom Vanilla Ale, Lazy Monk Abbey Style, Amarillo Cream Ale. (AG),

Buy a shirt now!!! Please! Did I help you? Buya shirt!
Cool Shirts.


Cheesefood is offline
 
Reply With Quote Quick reply to this message
Old 03-02-2007, 05:16 PM   #22
BarryNL
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2007
Location: Netherlands
Posts: 84
Default

Quote:
Originally Posted by Bobby_M
Hey barry, I'm also a diver. Well, the wort was boiled, all three samples that is. The one that was injected with O2 was not shaken in any way. That was the whole point of it actually, to compare the various methods that people normally use. The one i omitted was the aquarium pump method.
Which one do you think worked best in the end. After you punctured the gloves its a bit difficult to see. Maybe you could try it next time with condoms; I see to remember from my student days that you can blow those things up to an amazing size

I had wondered if there was a way to aerate my last batch with my scuba gear but wisely decided against it - shame I have a half empty tank of 100% oxygen decompression gas that's going to cost me the same to get filled whether I use the rest or not.
__________________
Brewing: Dunkelweizen '09, alt.beer.dusseldorf
Bottled: Erebus American IPA, Big 4-0 Barley Wine, Oranje Tripel, Got Milk Stout?
Planning: Oktoberfest, Peter the Grain RIS
Drinking: Abbey Daze, Best of 2008

BarryNL is offline
 
Reply With Quote Quick reply to this message
Old 03-02-2007, 05:27 PM   #23
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 2 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,105
Liked 1016 Times on 678 Posts
Likes Given: 28

Default

The gloves were just for an indicator of lag times and amount of fermentation in the first 24 hours or so. After that, I was letting gravity tests dictate how well the attenuation was progressing. With that, I think the numbers speak for themselves. The O2 injected batch attenuated the furthest while shaking and doing nothing were pretty close. I'm not 100% satisfied with my results because I think the high pitch rates I used (meaning quantity of initial yeast cells pitched) was probably higher than the typical batch. I'd love to repeat with a low pitch rate like liquid yeast without a starter to see if the results are similar or maybe more dramatic. I THINK this whole thing would be moot if you make a starter and pitch an army of yeast in the first place which would not require this initial aerobic reproduction cycle that O2 rich wort produces.

No reason you couldn't use your O2 deco gas, just put it through an aquarium stone. I'd even be prone to use Nitrox before I would resort to the shaky shake method.

__________________
BrewHardware.com
Sightglass, Refractometer, Ball Valve, Weldless bulkhead, Thermometer, Decals, Stainless Steel Fittings, Compression Fittings, Camlock Quick Disconnects, Scale, RIMS tube, Plate Chiller, Chugger Pump, Super Clear Silicone Tubing, and more!

New Stuff?
Bobby_M is offline
 
Reply With Quote Quick reply to this message
Old 03-02-2007, 10:08 PM   #24
joejoe1881
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2007
Posts: 21
Liked 1 Times on 1 Posts

Default

I'm new to brewing, with my first batch now fermenting, and I'm still trying to sort through all the equipment that I need, and equipment thats not very necessary. I think from this initial experiment O2 injection falls in the later category. A 4% difference from the worst performer to the best performer can be considered 0 difference given the data is from one small sample size.

If you were going to redo the experiment I would use a minimum of 3 samples for each and take the average. This way you can rule out any outside interference. Of course the more samples the better, but realistically I think 3 is a good number.

Otherwise, great job and I wish I had the equipment because I would love to do the experiments myself.

__________________
joejoe1881 is offline
 
Reply With Quote Quick reply to this message
Old 03-03-2007, 04:52 AM   #25
Sir Humpsalot
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Sir Humpsalot's Avatar
Recipes 
 
Join Date: Nov 2006
Posts: 4,043
Liked 82 Times on 66 Posts
Likes Given: 22

Default

I called a friend of mine who works in a clinic, "Hey man, I need an O2 tank... what will it cost me?

Him: What do you need it for?

Me: To brew stronger beers.

Him: You gonna give me some?

Me: Yeah, that'd be a small price to pay.

Him: When do you need it?

Me: I'm doing low grav bers for the next two batches. No hurry.

Him: I can get you one tonight? What do you need? The 50 lbs ones? The ones that are 4 feet tall?

Me: No no.. just one of the tiny ones filled with O2.

Him: Ok. Come over in an hour... I'll have one for you..

Me: I'm not in that much of a hurry.. can you have one for me, full, on monday?

Him: Of course. Stop by anytime...



Woohooo!!!!!!!!

__________________
In Process: Mango Beer, Homebrewers Pale Ale
Bottled/Kegged:Spicy Light Rye, Rice-adjunct Pale Ale, Mild Bourbon Porter, Roasty Stout, Basic Light Mead, Bourbon County Stout Clone
Up Next: Berlinerweiss, Chocolate Raspberry Ale, and American IPA
Sir Humpsalot is offline
 
Reply With Quote Quick reply to this message
Old 03-03-2007, 12:25 PM   #26
EdWort
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
EdWort's Avatar
Recipes 
 
Join Date: Jul 2006
Location: Bee Cave, Texas
Posts: 11,967
Liked 265 Times on 138 Posts
Likes Given: 7

Default

Quote:
Originally Posted by Cheesefood
I have that one, Ed, and it's nice. The ability to move it around and aerate all sections - and stir while aerating - is a bonus.
Yep, it arrived on schedule. Pretty slick system. I picked up and O2 cylinder at Lowes on the way home and stepped up my Kolsch starter with it. The starter is humming along nicely.
__________________

Cheers,

EdWort

Haus Pale Ale, Bavarian Hefeweizen, Robust Porter, Oktoberfest Ale, Wounded Knee IPA, Rye IPA, BCB IPA, Kolsch, Apfelwein

EdWort is offline
 
Reply With Quote Quick reply to this message
Old 03-03-2007, 02:03 PM   #27
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 2 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,105
Liked 1016 Times on 678 Posts
Likes Given: 28

Default

Quote:
Originally Posted by joejoe1881
I'm new to brewing, with my first batch now fermenting, and I'm still trying to sort through all the equipment that I need, and equipment thats not very necessary. I think from this initial experiment O2 injection falls in the later category. A 4% difference from the worst performer to the best performer can be considered 0 difference given the data is from one small sample size.

If you were going to redo the experiment I would use a minimum of 3 samples for each and take the average. This way you can rule out any outside interference. Of course the more samples the better, but realistically I think 3 is a good number.

Otherwise, great job and I wish I had the equipment because I would love to do the experiments myself.
My methods and results have been questioned enough (including many of my own self criticisms) in the "definitive aeration experiment" thread and I welcome anyone to put the effort into attempting to duplicate the test. I consider the experiment to be a small piece of the puzzle to help people make their own decisions. I might do a second test, but I'm not going to split a batch into 9 or 12 different samples unless people start sending me some jugs.
__________________
BrewHardware.com
Sightglass, Refractometer, Ball Valve, Weldless bulkhead, Thermometer, Decals, Stainless Steel Fittings, Compression Fittings, Camlock Quick Disconnects, Scale, RIMS tube, Plate Chiller, Chugger Pump, Super Clear Silicone Tubing, and more!

New Stuff?

Bobby_M is offline
 
Reply With Quote Quick reply to this message
Old 03-03-2007, 03:56 PM   #28
FlyGuy
Feedback Score: 0 reviews
 
FlyGuy's Avatar
Recipes 
 
Join Date: Jan 2007
Location: Calgary, Alberta
Posts: 3,618
Liked 132 Times on 41 Posts
Likes Given: 7

Default

Quote:
Originally Posted by Bobby_M
My methods and results have been questioned enough (including many of my own self criticisms) in the "definitive aeration experiment" thread and I welcome anyone to put the effort into attempting to duplicate the test. I consider the experiment to be a small piece of the puzzle to help people make their own decisions. I might do a second test, but I'm not going to split a batch into 9 or 12 different samples unless people start sending me some jugs.
I think you did an outstanding job. Perhaps if you called it the 'really powerful' aeration experminent instead of the 'definitive' one, people would be a little less nit-picky. But I think most of that was meant to be constructive, regardless. Seriously, though, I think you nailed all the essential elements of the test, and were up-front with your limitations. That's a first rate scientific study in my mind!

I wanted to add this to emphasize the POSITIVE response to your excellent thread. For whatever reason, it is sometimes easier to be critical than to heap on praise, even when praise is deserved. So while I know you received some critical comments (including my own), far and away I think everyone was very impressed with the experiment you shared, it stimulated some interesting thought and discussion, and in the end, I think many of us really learned something that will be useful in the future. Thanks again!
__________________
Cheap 10 gal cooler MLT$3 AutosiphonAluminum Pot FAQEasy Steam Injection Mash SystemMake a Frozen Yeast Bank
Improving Stovetop Boiling Improving AG Efficiency
FlyGuy is offline
 
Reply With Quote Quick reply to this message
Old 03-03-2007, 04:07 PM   #29
boo boo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2005
Location: Hearts's Delight, Newfoundland
Posts: 4,171
Liked 30 Times on 26 Posts
Likes Given: 4

Default

Quote:
Originally Posted by EdWort
I'm stoked. My areator system from Williams Brewing arrives tomorrow. I went with theirs because of the stainless tube which gets the stone to the bottom of the fermentor. All the others use the stupid plastic hose which curls up and does not go where you want it.

Great stuff Bobby_M!
I have the curly one and cut the hose 2 inches from the stone and fitted an old racking cane to it so it now goes to the bottom and I can stir it as well.
__________________

How do you BBQ an elephant....first you get your elephant....

boo boo is offline
 
Reply With Quote Quick reply to this message
Old 03-04-2007, 02:29 AM   #30
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 2 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,105
Liked 1016 Times on 678 Posts
Likes Given: 28

Default

Appreciated flyguy. So who's going to peer review and duplicate?

__________________
BrewHardware.com
Sightglass, Refractometer, Ball Valve, Weldless bulkhead, Thermometer, Decals, Stainless Steel Fittings, Compression Fittings, Camlock Quick Disconnects, Scale, RIMS tube, Plate Chiller, Chugger Pump, Super Clear Silicone Tubing, and more!

New Stuff?
Bobby_M is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ill effects of FWH?? Benjibbad All Grain & Partial Mash Brewing 18 08-18-2009 12:09 PM
areation for the wort..... JoshuaWhite5522 DIY Projects 3 03-23-2009 02:57 AM
areation kit newbrewr4fun General Techniques 13 07-01-2008 04:57 PM
Cheap Areation Device AleHole General Techniques 6 01-05-2007 02:17 AM
Areation, before or after you pitch?? beer35 General Techniques 4 12-03-2006 05:47 AM