OPERA CRYSTAL
OPERA CRYSTAL enhances the antioxidant properties of sulphurdioxide, creating a powerful antiseptic.
OPERA SENSO
OPERA SENSO is a blend of ellagic tannins extracted from selected species of oak and gall nuts. The product is sold as a ready-to-use solution.
FERMENTAN WHITE
Fermentan White, a blend of gallic tannins and deactivated yeasts to increase the aroma of white and rosé wines.