To
determining the alcohol content use the alcohol scale on the hydrometer.
Take one reading before fermentation. Take the final reading after
fermentation is complete. E.g.
|
Original
Reading:
|
|
11%
S.G.
|
1.085
|
|
Final
Reading:
|
(+)
|
-1%
S.G 12%
|
0.992
|
The
difference between the first and last reading gives you the percentage
of alcohol in your wine, e.g. First reading is 11% (S.G – 1.085).
Final reading is minus 1% (S.G – 0.992). The difference between these
readings is 12%, which means your wine is 12% alcohol by volume.