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Potassium metabisulfite (KMS) is a versatile winemaking product that can be used for a variety of purposes, including:


  • Sanitizing equipment: KMS can be used to sanitize winemaking equipment, such as carboys, bottles, and hoses.
  • Preventing oxidation: KMS can be added to wine to prevent oxidation, which can cause wine to lose its flavor and aroma.
  • Killing wild yeast and bacteria: KMS can be used to kill wild yeast and bacteria in wine, which can help to prevent spoilage.
  • Promoting malolactic fermentation: KMS can be used to promote malolactic fermentation, a secondary fermentation that converts tart malic acid into softer lactic acid.


KMS is a safe and effective product that is widely used by winemakers. It is available in a variety of forms, including powder, granules, and tablets.

Potassium Metabisulfite

  • 1 oz, 2 oz, 1 lb, 5 lb, 10 lb, 50 lb

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