General information (Malt and beer production)

For the determination of original wort gravity within the range of 13 to 20 w/w-% there is among other things a well-known mathematical linear formula according to [2] with an accuracy of +/- 0,03 w/w-%. This formula can be used for the determination of original wort gravity within a range of 10 to 21 w/w-%, but with a reduced accuracy of +/- 0,1 w/w-% or by applying a simple correction to the formula of +/- 0,07 w/w-%. Through further adjustments of this mathematical formula according to [2] and via range containment it is possible to determine the original wort from the density d(20/4) over the density d(T) with an accuracy of less than +/- 0,01 w/w-% within the range of 10 to 18 w/w-%. Remarkably enough this does not involve complicated arithmetic operations, but rather the fact that this correlation can be described with linear functions.