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Old 01-29-2012, 11:21 PM   #1
GRBC's Avatar
Jan 2011
Richmond, VA
Posts: 242
Liked 34 Times on 21 Posts

Is there any reason I can't degass and measure an accurate FG with a hydrometer from a bottle of commercial beer i am trying to clone?

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Old 01-30-2012, 01:00 AM   #2
Jun 2011
Bedford, New Hampshire
Posts: 241
Liked 31 Times on 23 Posts

Hm, I'm also interested in this.

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Old 01-30-2012, 01:09 AM   #3
Oct 2011
Florence, Alabama
Posts: 1,653
Liked 118 Times on 100 Posts

That would work. There are a few factors that might make it a little tricky, such as if the brewery in questions uses a very fine filtration, but it would definitely help point you in the right direction.

You are definitely correct that you need to degass the beer first. If you don't, you will get a false low reading. Take the beer and pour it back and forth between two oversized containers, do it with a flourish, and do it repeatedly... perhaps 30 times if you want to be sure of driving the max amount of CO2 out of solution.
"Why did you.... what was the point of... how drunk were you when you decided this was a good idea?" - DMartin

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