What formula does your brewery use to calculate ABV?
a. My Anton-Paar EasyDENS uses 1000*(OG-FG)/7.36
b. Beersmith uses 1000*(OG-FG)/7.51
c. Many web sites use 100*(OG-FG)*1.32
Clearly these vary - a recent beer of mine would have turned out as any of these:
OG=1.061 FG= 1.012
a. (1000*(1.061-1.012))/7.36 = 6.658%
b. (1000*(1.061-1.012))/7.51= 6.525%
c. 100*(1.061-1.012)*1.32= 6.468%
When posted over a bar with a single decimal these range from 6.5% to 6.7%, which can affect a customer’s choice.
cheers
Roger Wood
Binarybrewing.co
a. My Anton-Paar EasyDENS uses 1000*(OG-FG)/7.36
b. Beersmith uses 1000*(OG-FG)/7.51
c. Many web sites use 100*(OG-FG)*1.32
Clearly these vary - a recent beer of mine would have turned out as any of these:
OG=1.061 FG= 1.012
a. (1000*(1.061-1.012))/7.36 = 6.658%
b. (1000*(1.061-1.012))/7.51= 6.525%
c. 100*(1.061-1.012)*1.32= 6.468%
When posted over a bar with a single decimal these range from 6.5% to 6.7%, which can affect a customer’s choice.
cheers
Roger Wood
Binarybrewing.co
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