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Thread: Higher than expected attenuation

  1. #1
    Join Date
    Mar 2017
    Location
    Madelia mn
    Posts
    9

    Higher than expected attenuation

    Hello All,
    we have recently been getting higher than expected attenuation rates in the brewery. We have been using fermentis products and were getting great results until recently. It seems like all the beers are finishing around 5% higher than previous repeated results. I wounder if it a possible infection setting in or something obvious i'm missing. With that said any thoughts on where to start looking.

    Thanks in advance

  2. #2
    Join Date
    Sep 2013
    Location
    Somerville, MA
    Posts
    28
    What strain are you using? Also, are you doing forced ferments to cross-reference your final gravities?

  3. #3
    Join Date
    Jun 2011
    Location
    Richmond, VA.
    Posts
    432
    this could be multiple issues. do you know the malt analysis from the malter? you could be extracting more fermentable sugar vs. unfermentable. how strong is your yeast strain? can it produce emzymes to break down more complex sugars?

  4. #4
    Join Date
    Mar 2017
    Location
    Madelia mn
    Posts
    9
    Quote Originally Posted by fuelforthehate View Post
    What strain are you using? Also, are you doing forced ferments to cross-reference your final gravities?
    We are using S-04, K97, and 34/70 for the most part. We did do forced ferment testing for the first few of each batch but have stopped as we where hitting the numbers pretty consistently.

    We are switching over from a PAA to a stabilized chlorine dioxide for our SIP and paying a bit more attention to a possible shadow area that SIP/CIP may not be hitting.

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