How Long Does Wine Keep After It's Been Opened? {Luxist}

Nov 16th 2009 3:36PM After being served many glasses of partially or sometimes totally oxidised wines by staff who receive little training from their employers about wine, I did something about it and created the Wine Preserva. There is a free white paper download on the website (www.winepreserva.com) which is easy to read.
We recommend customers put the disk into the bottle as soon as the first 2 glasses are poured, for best effect - we get up to 5 days with the same taste and aroma as a freshly opened bottle.
It's critical to apply the disk to aged wines within a short period after an aged wine is opened - let it breathe and then apply the disk. As Bill said, some 'collapse' within the hour,
Cheers