Kieselsol and Chitosan are fining agents used primarily in winemaking but also occasionally in brewing to help clarify the beverage and remove unwanted particles and haze.
Kieselsol: Also known as silica sol, Kieselsol is a fining agent made from colloidal silica. It primarily works on negatively charged particles in the wine or beer.
Chitosan: Derived from chitin, which is found in the exoskeleton of crustaceans, Chitosan acts on positively charged particles.
