Wine purifier

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Website says the following: 1. POUR All wine contains sulfites, which are artificial preservatives added during production. They are no longer needed once the bottle is opened. 2. PURIFY Proprietary polymer technology filters away free sulfites and their bitter taste, while allowing other compounds in wine to flow through unaffected. 3. PURE WINE Through Selective Sulfite Capture™, free sulfites are reduced to a more naturally occurring level for most wines.
@kristofertm so it filters out sulfates...ok, why the 3-step pitch?
@thejeremycarson How do you purify without the pour?! j/k know what you mean
I'm confused by this pitch. Wouldn't you expect what's the in bottle to be exactly what the winemaker wanted?