Expert: John Snyder - 7/31/2011

Question
Dear sir,

The value of alcohol strength depends on the temperature at the checking time. Right? Is there any table (or formula)for quick converting the value of alcohol strength to standard temperature (20 Celsius degree)?

Ex: the value of my alcohol strength solution is 35%v/v at 30 Celsius degree. I wonder what its strength at 20 Celsius degree is.

Thanks a lot

Answer
I'm not sure I understand your question,as written.I'm assuming you want to compare the S.G. of beer before fermentation to S.G.after fermentation,to determine alcohol content,using temperature corrections.The following two websites should provide you with that info

http://hbd.org/cgi-bin/recipator/recipator/hydrometer.html?11088339

http://brewingtechniques.com/library/backissues1.3/manning.html

                      John