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LME and Specific Gravity and a math question

Discussion in 'Homebrewing' started by kdgrant6, Mar 12, 2012.

  1. Recently, I've gone back to brewing with LME and DME as a break from the time involvement of all-grain brewing. I've purchase bags of LME from Williams brewing. They give an average OG of 1.040 for a 6 pound bag into 5 gal. of water, which seems pretty average based on other suppliers' claims. I know there are differences of ferment-ability based upon the grain combinations in the bag, but as a rule, is estimating the OG just a math exercise? For example, does an 8 pound bag give an OG of approximately 1.053.3? I divided 1.040 by 6 pounds, giving me 6.67 of OG for each pound of the LME. I then added twice that back to the 1.040 to give the 1.053.

    Am I missing something?
  2. VikeMan

    VikeMan Advocate (740) Pennsylvania Jul 12, 2009

    No, that's how the math works.
  3. The specific numbers will vary by source, but yes, it's just that easy!

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