Made from a food grade, super porous polymer, Selective Sulfite Capture? filters work by removing sulfites and not the other things in wine. This remarkable polymer is the magic behind ?llo, revealing the natural taste of wine without compromising its integrity.

Analytical tests indicate up to an 80% reduction in free sulfites following ?llo purification as directed among four red and four white wines. Further testing indicated negligible changes following purification among tannin, histamine, total and polymeric anthocyanins, biogenic amines, ethanol, acetic acid, titratable acidity, tyramine, and catechin.

Observed reduction in free SO2 among four red and four white wines by aeration/oxidation or segmented flow analysis.
Observed range in sulfite reduction refers to the minimum and maximum reductions observed.
Phenolics panel from one red wine. 
Combined basic chemistry panels from one red and one white wine.