Final graavity readings - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > General Beer Discussion > Final graavity readings

Reply
 
Thread Tools
Old 02-12-2013, 07:51 PM   #1
penguin69
Recipes 
 
Nov 2012
Posts: 100
Liked 2 Times on 2 Posts



So I have brewed a few batches now and all 3 never really got to the final gravity they were supposed to. The all stopped a little short. My last bat h was a Munich Helles. Starting gravity was 1.052. Recipe called for 1.045-1.050. Waited 4 weeks in fermenter and it stopped at 1.024.
My question is what could be the likely issue. I am sure there are numerous things that can probably cause this but was wondering if maybe there is something that is Limey the cause.

 
Reply With Quote
Old 02-12-2013, 07:54 PM   #2
cjb
Recipes 
 
Mar 2011
Portland, OR
Posts: 206
Liked 6 Times on 6 Posts


Are you using a hydrometer or refractometer to take your readings? If the latter, are you doing the required correction?

Are you making yeast starters?

 
Reply With Quote
Old 02-12-2013, 07:54 PM   #3
mcbaumannerb
HBT_LIFETIMESUPPORTER.png
 
mcbaumannerb's Avatar
Recipes 
 
May 2012
Phoenixville, Pennsylvania
Posts: 11,083
Liked 6139 Times on 3533 Posts


Likely causes would be under-pitching the amount of yeast needed; fermenting at too low a temperature for the yeast or lack of oxygen in the wort.

How much (and what kind of) yeast did you use? Did you aerate your wort before pitching? What was the temperature you stored it at vs. the recommended range?
__________________
Untappd: mcbaumannerb BEEr

Facebook: BEEr

 
Reply With Quote
Old 02-12-2013, 07:59 PM   #4
ACbrewer
HBT_LIFETIMESUPPORTER.png
Recipes 
 
Jan 2011
Fredericksburg, VA
Posts: 1,695
Liked 125 Times on 109 Posts


Calabrated your hydrometer for temps? they are to read 1.000 at 60F and are +.002 at 77F I think. Also do they taste sweet? at almost +.010 they should taste sweet, or maybe you have lots of unfermentables?

 
Reply With Quote
Old 02-12-2013, 08:01 PM   #5
penguin69
Recipes 
 
Nov 2012
Posts: 100
Liked 2 Times on 2 Posts


I am using a hydrometer

I used Brewferm lager yeast at 57 degrees. That was as cold as I could keep it.
I did not use a yeast starter just rehydrated it from the package.

 
Reply With Quote
Old 02-12-2013, 08:02 PM   #6
penguin69
Recipes 
 
Nov 2012
Posts: 100
Liked 2 Times on 2 Posts


Yes I aerated it. At least I think I did a good job aerating it.

 
Reply With Quote
Old 02-12-2013, 08:10 PM   #7
mcbaumannerb
HBT_LIFETIMESUPPORTER.png
 
mcbaumannerb's Avatar
Recipes 
 
May 2012
Phoenixville, Pennsylvania
Posts: 11,083
Liked 6139 Times on 3533 Posts


The temp is on the higher end of the range given so if anything it should have fermented more aggressively. Also it is a high attenuating yeast so I don't think that would be the cause.

What about calibration of your hydrometer? Do you have some plain (preferably distilled) water stored in the same spot as your beer? If so, take a measure of that to find what your adjustment would be and apply the same to your beer's gravity.
__________________
Untappd: mcbaumannerb BEEr

Facebook: BEEr

 
Reply With Quote
Old 02-12-2013, 08:14 PM   #8
penguin69
Recipes 
 
Nov 2012
Posts: 100
Liked 2 Times on 2 Posts


Never did a hydrometer adjustment. Didn't think I had to do anything with it. I do have some distiller water in the pantry that I use for my humidor. Not in same place as beer though.
Is there a write up somewhere on how to do the hydrometer adjustment testing

 
Reply With Quote
Old 02-12-2013, 08:19 PM   #9
mcbaumannerb
HBT_LIFETIMESUPPORTER.png
 
mcbaumannerb's Avatar
Recipes 
 
May 2012
Phoenixville, Pennsylvania
Posts: 11,083
Liked 6139 Times on 3533 Posts


You can go here to read about the reasons for it and print a table to adjust or here for an online calculator.
__________________
Untappd: mcbaumannerb BEEr

Facebook: BEEr

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
low final specific gravity readings mysillyusername Beginners Beer Brewing Forum 4 01-13-2013 05:10 PM
Hydrometer v refractometer readings for final gravity hiphops Fermentation & Yeast 7 11-15-2012 09:02 PM
How "final" is a final gravity reading of a static fermentation (i.e. - no stirplate) grndslm General Beer Discussion 4 06-28-2012 04:40 AM
brew day gravity readings and next day readings rustynails223 General Beer Discussion 3 03-05-2012 04:14 PM
Final Gravity Readings platypus Beginners Beer Brewing Forum 10 02-26-2010 12:36 AM


Forum Jump