Some people feel that after a bottle of wine has been opened, it should not be stored with air in it, because this will ruin the taste of the remaining wine. Personally I think the taste of all wine as been ruined already, it's basically grape juice that has gone sour, but that's just me.
Anyway, the solution to the air-in-the-bottle problem, if you think it's a problem, is to purge the air out and replace it with an inert gas, like the argon in this small compressed gas cylinder (the same size as CO2 cylinders used in BB-guns and similar applications). There's a machine available from wine snob catalogs that uses these cylinders for exactly that purpose.
I can't imagine this cylinder holds enough gas to purge more than one bottle of wine, at least not to any high level of purity (to be sure you've displaced all the air from a container, you need to blow at least 10 or more times its volume of inert gas through it). But maybe high purity is not critical, who knows, and why not just drink the whole thing at once if you bothered to open it in the first place?
Contributor: Theodore Gray
Acquired: 20 January, 2007
Text Updated: 21 January, 2007