Ebullioscope

The Ebullioskop ( gush forth from the Latin ebullire =) is a measuring instrument for determining the alcohol content ( alcoholometry ) of wine. Its accuracy is sufficient for practical purposes.

The Ebullioskop was stated by Tabarié, Amagat, François Marie Raoult and Brossard -Vidal. Its creation is due to the fact that the boiling point of alcoholic liquids alcohol content equivalent (see Raoult's law ):

• The more alcohol containing the liquid, the more its boiling point approaches to the alcohol ( at 78 ° C);
• The higher the water content of the liquid or the lower alcohol content, the closer its boiling point is 100 ° C ( the boiling point of water).

The Vidalsche Ebullioskop consists of a small metal boiler D receiving the wine to be heated to boiling ( heating E). Because a small capacitor A is provided in which the vaporized liquid is condensed and dripping back into the boiler. In the steam room, this mercury-filled thermometers C, on the scale is not the degrees of temperature, but directly the alcohol contents can be read.