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Inert gas

Term (inert = inactive, uninvolved) for inert substances that do not take part in certain chemical processes because they do not contain oxygen. These are almost all gases (noble gases), with the exception of reactive oxygen. In viticulture, nitrogen and carbon dioxide are often used as protective gases to prevent unwanted oxidation in wine containers. This prevents the wine from becoming creamy, which is caused by bacteria.

Bottling

Inert gas mixtures are produced by burning combustion gases and do not contain oxygen, but nitrogen and carbon dioxide. These mixtures are less expensive than pure nitrogen, which is, however, preferred. There are bottling plants that fill the empty space (headspace) with inert gas before the bottle is closed to prevent oxidation.

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