Potassium Metabisulfite – Winemaking Sulfite for Sanitizing & Wine Protection

Potassium metabisulfite is widely used in winemaking to protect wine and must from oxidation, spoilage organisms, and unwanted bacteria. It releases sulfur dioxide (SO₂), which helps preserve freshness and stability during the winemaking process.

This sulfite is commonly added during crushing, fermentation, and storage to help control wild yeast and maintain wine quality.

Common Uses:

• Protect wine from oxidation
• Control unwanted bacteria and wild yeast
• Sanitize winemaking equipment

Typical Usage:

• For sanitizing: use approximately 2 oz per gallon of water.
• For antioxidant and antimicrobial protection: about 1/4 teaspoon per 6 gallons.
• Dissolve sulfite in warm water before adding.

Potassium metabisulfite is an essential ingredient in many winemaking processes, helping preserve flavour, colour, and stability in finished wine.