How does the filter work?

The Selective Sulfite Capture Filter is the magic of Üllo! When activated, it captures free sulfites in wine by a reaction called covalent attachment. The beauty of this chemistry is that the reaction is selective for the most reactive components of wine, the sulfites, and no unintended “products” are introduced into the wine during purification. That is, the filter removes only the sulfites without adding anything back in. That’s the magic of Selective Sulfite Capture™ and what sets Üllo apart in wine purification. It’s why we invented the term!