R redfox Active Member Joined Jan 3, 2010 Messages 44 Reaction score 7 Location SW PA May 23, 2010 #1 if the OG = 1.065 and the yeast strain has an attenuation of 70-76 percent, what SHOULD the FG be? I know I should be able to figure this out, but...it's early here! Thanks!
if the OG = 1.065 and the yeast strain has an attenuation of 70-76 percent, what SHOULD the FG be? I know I should be able to figure this out, but...it's early here! Thanks!
D danielinva Well-Known Member Joined Jun 29, 2008 Messages 257 Reaction score 1 Location Henrico, VA May 23, 2010 #2 FG = OG-((OG-1)*Attenuation) so FG=1.065 - (.065*.75) = 1.065-.049 = 1.016 Follow?
OP OP R redfox Active Member Joined Jan 3, 2010 Messages 44 Reaction score 7 Location SW PA May 23, 2010 #3 thank you, danielinva! yes, that makes sense.
homebrewer_99 Well-Known Member Joined Feb 1, 2005 Messages 19,581 Reaction score 1,217 Location I-80, Exit 27 (near the Quad Cities) May 23, 2010 #4 For many yeasts 75% is within the attenuation range. For a quick computation I divide the OG by 4 and the answer is the FG. Of course, danielinva's process is more precise. :rockin:
For many yeasts 75% is within the attenuation range. For a quick computation I divide the OG by 4 and the answer is the FG. Of course, danielinva's process is more precise. :rockin:
david_42 Well-Known Member Joined Oct 8, 2005 Messages 25,581 Reaction score 196 Location Oak Grove May 23, 2010 #5 Of course, danielinva's process is more precise. Click to expand... Although you really should calculate the range, not just one value. There's always ways to make brewing more complicated.
Of course, danielinva's process is more precise. Click to expand... Although you really should calculate the range, not just one value. There's always ways to make brewing more complicated.
TipsyDragon Well-Known Member Joined Mar 8, 2009 Messages 2,607 Reaction score 28 Location California May 23, 2010 #6 your FG should be between 1.020 and 1.015. don't be alarmed if its a couple points outside this range.
your FG should be between 1.020 and 1.015. don't be alarmed if its a couple points outside this range.