What happens to wine when...?

[hotwine]

Private Preserve is an inert gas compound of nitrogen and Argon. It's to be sprayed into the neck of an open bottle of wine to displace oxygen, which is the element that causes the damage to an opened bottle. It's designed to be tasteless and odorless..... but as an amateur welder who uses such gas mixtures in metalwork, I have no problems detecting the stuff, and don't like to use it with wine.