New Giveaway - Wort Monster Conical Fermenter!

Home Brew Forums > Home Brewing Beer > General Techniques > Attenuation




Reply
 
LinkBack Thread Tools Display Modes
Old 02-05-2009, 02:24 AM   #1
beerthirty
big beers turn my gears
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
beerthirty's Avatar
Recipes 
 
Join Date: May 2008
Location: Phoenix AZ
Posts: 2,651
Liked 21 Times on 11 Posts

Default Attenuation

I've tried the formula for calculating yeast attenuation and I must be doing something wrong. Its probably just a math mistake but I can't seem to figure this out. I'm hoping some one can help. The formula I'm using is OG-FG/OG.
Example OG 1.045- FG 1.011=.034/OG 1.045=.0325
What am I doing wrong here? I know my attenuation is not 32.5%. I've already searched but only come up with this same formula every time.



__________________
Quote:
Originally Posted by the_bird View Post
"I've got a fever... and the only prescription is, MORE CARBOYS!"
primary- Tangerine Dream, SWMBO slayer,
serving- amber ale hop experiment #6, Roggenbier, apfelwine
planning- Cru?
conditioning- 9/9/09 barleywine
Drink water?... Never, fish fornicate in it.--- W.C. Fields
Most problems can be solved with the proper application of force.
beerthirty is offline
 
Reply With Quote Quick reply to this message
Old 02-05-2009, 02:52 AM   #2
beerocd
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Posts: 698
Liked 2 Times on 2 Posts

Default

34/45 = 75.6% apparent attenuation.
(OG - FG)/OG

-OCD



__________________

Due to recent economic crisis, stock market crash, budget cuts, and the rising cost of everything including taxes: "The Light at the End of The Tunnel" has been turned off.
beerocd is offline
 
Reply With Quote Quick reply to this message
Old 02-05-2009, 01:09 PM   #3
menschmaschine
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2007
Location: Delaware
Posts: 3,278
Liked 31 Times on 26 Posts

Default

Yes, you have to use whole numbers, so just use the last two of each SG.

__________________

END TRANSMISSION

menschmaschine is offline
 
Reply With Quote Quick reply to this message
Old 02-06-2009, 05:36 AM   #4
beerthirty
big beers turn my gears
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
beerthirty's Avatar
Recipes 
 
Join Date: May 2008
Location: Phoenix AZ
Posts: 2,651
Liked 21 Times on 11 Posts

Default

Thanks, I knew it was something simple I was missing.

__________________
Quote:
Originally Posted by the_bird View Post
"I've got a fever... and the only prescription is, MORE CARBOYS!"
primary- Tangerine Dream, SWMBO slayer,
serving- amber ale hop experiment #6, Roggenbier, apfelwine
planning- Cru?
conditioning- 9/9/09 barleywine
Drink water?... Never, fish fornicate in it.--- W.C. Fields
Most problems can be solved with the proper application of force.
beerthirty is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
attenuation nutcase All Grain & Partial Mash Brewing 4 04-14-2009 09:55 AM
Help with Low Attenuation newbrewerny Beginners Beer Brewing Forum 3 10-26-2008 03:11 AM
Attenuation? jayhuff Beginners Beer Brewing Forum 7 08-05-2008 03:37 AM
Attenuation ? Chris_Dog General Beer Discussion 31 01-07-2008 09:57 PM
attenuation???? pa-in-utah General Techniques 4 04-06-2007 12:44 AM