Allow the hydrometer to float freely and read off from the surface of the liquid.
Ifone wants to know the alcoholic content of the mash the hydrometer must be used.
The hydrometer reading of the finished fermentation divided by 8 equals the percentage of alcohol by volume.
Example: Starting value = 80 (white field) and final value -16 (coloured field). Finished fermentation reading is 80 on the plus scale and 16 on the minus scale, giving 96 degrees. 96 divided by 8 =12%, which is the alcohol in the mash. If the hydrometer is graduated in specific gravity +80° Oechsle = 1080, -16° Oechsle = 984.
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