Hydrometer reading of carbonated beverage

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HopIt

Hydrometer reading of carbonated beverage

Post by HopIt » Wed Jun 11, 2014 9:48 pm

If you take a reading of a carbonated beer (i.e. out of a bottle) does the co2 affect the reading significantly?

Forgot to take a reading when bottling. Obviously when I do my calculation it won't include alcohol produced by the priming sugar.

Cheers

killer
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Re: Hydrometer reading of carbonated beverage

Post by killer » Wed Jun 11, 2014 10:02 pm

Yes the rising gas bubbles can affect your reading. Ideally degas any carbonated sample first.

HopIt

Re: Hydrometer reading of carbonated beverage

Post by HopIt » Wed Jun 11, 2014 10:28 pm

I would assume that the rising bubbles could result in a higher gravity reading than the actual reading.

My reading was 1.010

HopIt

Re: Hydrometer reading of carbonated beverage

Post by HopIt » Sat Jun 14, 2014 1:31 am

Just in case anyone is interested, my degassed beer (after 24 hours) went up to 1.014 which makes sense as I mashed high

Cazamodo

Re: Hydrometer reading of carbonated beverage

Post by Cazamodo » Sat Jun 14, 2014 11:29 am

Thats odd isnt it?

As you quite rightly said, CO2 rising in the liquid may effect the reading, giving a higher grav reading, yet you got a lower reading in the carbed sample than the de-gassed sample.

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