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Veitshöchheimer shaking cylinder

Measuring device (also Veitshöchheim carbon dioxide cylinder) for determining the content of carbon dioxide in wine; see there

Kohlendioxid Incombustible, colourless and odourless, acidic gas (also carbon dioxide) with the molecular formula CO2. Colloquially, carbon dioxide is very often incorrectly referred to as carbonic acid. The gas is produced during all combustion processes and also during the respiration of animal and human beings. It also occurs in volcanic rocks and at great depths. Although it only makes up a small proportion of 0.039 percent by volume in the atmosphere, this tiny amount is indispensable for all life because it is needed by plants during photosynthesis and oxygen is formed in the process. Since industrialisation, the proportion has increased by around 25% due to the so-called greenhouse effect, which is directly related to climate change. The proportion is greater in the northern hemisphere (probably due to the larger land mass).

Carbon dioxide dissolves in liquids as well as in wine depending on pressure and temperature. During the dissolution, carbonic acid is also formed by reaction with water in the smallest amount of only 0.2%. By far the largest part, however, with over 99%, is the carbon dioxide dissolved in the wine (which does not yet produce carbonic acid), which is combined with the actual carbonic acid as "free carbonic acid". As the vine grows, the sugar in the grapes is formed from carbon dioxide and water. During fermentation, the sugar is then converted into carbon dioxide and alcohol. At 1.98 g/l, carbon dioxide is about 1.5 times heavier than air. Therefore, there is a danger of...

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