Shop Bee Folks for your Honey!
Results 1 to 4 of 4
  1. Default Measuring alcohol-content, which equation?

    So I've gotten into making high abv meads. Up until now I've used the calculator here https://www.brewersfriend.com/abv-calculator/ to calculate the ABV from the gravity change over time. Then I noticed there's also an option for an alternate calculation. The site doesn't really explain why but it mentions that the alternate equation is better at higher ABV's. If I plug in my OG (1.140) and my current gravity (1.022) I get the value of 15,49% for the standard equation and 18,20% for the alternative one, not really a trivial difference.

    So which one do I trust? It's a TOSNA-brew (Fermaid O + GoFerm) with Mangrove Jack's M05 Mead Yeast with an alcohol tolerance around 18%

    I used http://www.meadmakr.com/batch-buildr/ to calculate the recipe, it seems to use the standard equation.

    Any ideas?

  2. Default

    I've always used the formula that came with the hydrometer; (OG - FG)/.776. With your gravity readings, it would come out to 15.2%. I have no idea which measurement would be more accurate though.

  3. #3

    Default

    Your first number is correct. There is no way ABV can be any different. A point of gravity can only equate to the same amount of alcohol. regardless of whether you chew 20 points or 2000, it won't change.
    7 out of 4 people have a hard time using their hydrometer!

  4. Default

    Quote Originally Posted by Squatchy View Post
    Your first number is correct. There is no way ABV can be any different. A point of gravity can only equate to the same amount of alcohol. regardless of whether you chew 20 points or 2000, it won't change.
    Makes sense. One glucose-molecule = two ethanol-molecules, there's really no arguing about it. I wonder what they were thinking.

Similar Threads

  1. Question about alcohol content
    By Denise in forum Mead NewBees - Post your Questions Here
    Replies: 0
    Last Post: 07-30-2017, 05:35 PM
  2. Potential alcohol content
    By gnome in forum Mead NewBees - Post your Questions Here
    Replies: 6
    Last Post: 07-02-2006, 11:36 AM
  3. alcohol content
    By mercierarmory in forum Mead NewBees - Post your Questions Here
    Replies: 1
    Last Post: 08-02-2004, 05:35 PM
  4. alcohol content
    By mercierarmory in forum Archives
    Replies: 1
    Last Post: 08-02-2004, 05:35 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •