Potassium Metabisulfite | Penta Manufacturing Company | Potassium Metabisulfite is a white to off-white granular powder that has a sharp, pungent, sulfurous odor. This product is mainly used in the production of wine and beer and as a preservative in acidic environments such as lemon juice and pickling agents. | |
Sodium Metabisulfite | Foodchem International Corporation | Sodium Metabisulfite is used as a preservative and an antioxidant in food. This product appears as a white to yellow colored powder, and is often used in beer and wine making. |