Is sodium Campden a metabisulfite?
Yes, sodium Campden is a type of metabisulfite. Specifically, it refers to sodium metabisulfite (Na2S2O5). Another common variant used in winemaking and brewing is potassium metabisulfite.
Both sodium and potassium metabisulfite are used mainly as sterilizing and antioxidant agents in food and beverage production. When you see "Campden tablets," they usually contain either sodium or potassium metabisulfite.
