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Measuring instrument for the quick determination of the alcohol content of wine and wine-like beverages. It consists of a tube open at both ends, which is provided with a scale. The way it works is based on the phenomenon of the reduction of the surface tension of the water by alcohol, as well as the capillary effect (liquids rise upwards in narrow glass tubes against the force of gravity). The higher the alcohol content (and thus the lower the surface tension), the less an alcohol-water mixture is held in the capillary against gravity. The result is displayed in volume percent, the measuring accuracy is about 0.5% at a temperature of 20 °Celsius. The measuring range is only up to 25%, which is why the vinometer is not suitable for distillates. A high residual sugar content in the wine affects the accuracy of the measurement. Regarding other measuring methods for ingredients, see under analytical testing.

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Egon Mark

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Egon Mark
Diplom-Sommelier, Weinakademiker und Weinberater, Volders (Österreich)

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