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-   -   Alcohal content after bottling (http://www.homebrewtalk.com/f39/alcohal-content-after-bottling-302992/)

dentdr 02-10-2012 08:15 PM

Alcohal content after bottling
 
I recently bottled my second batch an amber lager Sam Adams clone an now 4 weeks later I'm enjoying the fruits of my labor. My question is this can I get an accurate alcohol reading if I take a warm un-chilled bottle and do a hydrometer ready for ALC %

jester5120 02-10-2012 08:17 PM

only if you took a reading of the unfermented wort first

dentdr 02-10-2012 08:19 PM

Quote:

Originally Posted by jester5120 (Post 3769375)
only if you took a reading of the unfermented wort first

I did is there a formula? or do I just take it for the face value of the hydrometer

phuff7129 02-10-2012 08:20 PM

OG - FG x 131.5 will get you close.

Jayhem 02-10-2012 08:22 PM

Did you take a gravity reading of the beer before bottling it? If so you already have what you need to calculate ABV% and add 0.25 - 0.5% for what the priming sugar adds to the batch.

dentdr 02-10-2012 08:24 PM

:rockin:
Quote:

Originally Posted by phuff7129 (Post 3769414)
OG - FG x 131.5 will get you close.

THANKS

Euphist 02-10-2012 10:11 PM

you will need to de-gas the sample first...the CO2 will throw off your reading.

dentdr 02-11-2012 02:08 PM

Quote:

Originally Posted by Euphist (Post 3770427)
you will need to de-gas the sample first...the CO2 will throw off your reading.

Makes sence, thanks


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