Üllo purifies wine using a food grade polymer to selectively remove sulfites, while allowing other compounds in wine to flow through unaffected. Through Selective Sulfite Capture™, sulfites are reduced to a more naturally occurring level of less than 10 ppm.
Sulfites are artificial chemicals added to wine as a preservative. They are a highly regulated food additive, because they are common food allergens and are toxic at high levels. Sulfites protect wine against oxidation and bacterial spoilage during shipping and storage but are no longer needed once you open the bottle.