An important and objective component of quality control in viticulture. There are various methods for determining the quantity of ingredients in wine in an objective and measurable form using technical, physical, optical and chemical aids. This is in contrast to sensory (organoleptic) testing, in which an assessment is made subjectively using only the human sensory organs.
An analytical test is mandatory when assigning the official test number (in Germany) and the state test number (in Austria) for quality wine testing (and therefore also for Prädikat wines). Among other things, the alcohol content (actual and potential), the total extract, the relative density, the residual sugar, the sulphurous acidity and (only for sparklingwine/sparkling wine) the carbon dioxide pressure are determined.
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Markus J. Eser
Weinakademiker und Herausgeber „Der Weinkalender“