unexpected gravity after temp adjust

Discussion in 'Homebrewing' started by Hop-Droppen-Roll, Jun 5, 2016.

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  1. Hop-Droppen-Roll

    Hop-Droppen-Roll Initiate (0) Nov 5, 2013 Minnesota

    I use the calculators at brewersfriend.com, and I'm not sure of something that just happened to me.

    7 days ago, my dad and I brewed our 5th batch of beer. It's a cream ale OG: 1.05

    Just now, I took a reading of 1.006 @ 61 degrees F - I entered this into the calculator to adjust to 68 degrees and it came out the same. How can I be 7 solid degrees away from my adjustment temp and not see a change in the SG?

    [​IMG]
     
    #1 Hop-Droppen-Roll, Jun 5, 2016
  2. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    Probably rounding. The conversion formula has a bunch of constants that go out to many decimal places. If the calculator truncated/rounded some/all of those constants, it would give a slightly different answer. FWIW, BrewCipher gives 1.005 for your input.
     
    #2 VikeMan, Jun 5, 2016
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  3. scottakelly

    scottakelly Maven (1,487) May 9, 2007 Ohio

    Because 7 degrees temperature difference isnt that big of a difference when it comes to hydrometer readings

    I also think you are looking for FG, not SG.
     
    #3 scottakelly, Jun 5, 2016
  4. DrMindbender

    DrMindbender Initiate (0) Jul 13, 2014 South Carolina

    An FG is just a stabilized SG...the SG may still change before it becomes an FG, and being 7 days in, the SG could still drop. Just sayin'
     
    #4 DrMindbender, Jun 5, 2016
  5. Hop-Droppen-Roll

    Hop-Droppen-Roll Initiate (0) Nov 5, 2013 Minnesota

    yeah, I anticipate it will continue to change a bit.
     
    #5 Hop-Droppen-Roll, Jun 6, 2016
  6. Hop-Droppen-Roll

    Hop-Droppen-Roll Initiate (0) Nov 5, 2013 Minnesota

    I'm operating off vague recollections here but I feel like I've input numbers with less than a 7 degree difference and seen a greater change in adjusted gravity. I could be wrong.
     
    #6 Hop-Droppen-Roll, Jun 6, 2016
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