| This product prevents oxidation or spoilage of wine by using the inert gases used by wineries worldwide: harmless nitrogen carbon dioxide and argon. Squirting a shot of this stuff lays down a blanket of protective gas on the wine s surface which blocks it from oxygen. Net weight 0.60 oz. Contains no CFCs environmentally safe 120 Plus full uses (600 separate sprays) Protects wine port sherry sake cognac single malt Scotch oils vinegars for days weeks even months Non-toxic tasteless non-flammable Medical grade gases Comes with extension tubes |