Potassium Metabisulphite


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Potassium Metabisulphite


An essential additive for winemaking. It has many actions including inhibiting the growth of bacteria, acting as an anti-oxidant (oxygen scavenger) preventing wine and must from oxidation and solubilises phenolics found in grape skins.

Recommended Dosages:

  • 1g per 10kg of fruit. Double this dosage if you believe the fruit may be unsanitary or is in poor condition.
  • 2-5 g/hL on wine during racking.
  • 10-15 g/hL for the preservation of sweet filtered wines.

1 gram of potassium metabisulphite develops about 0.56 g of SO2

Usage Instructions:

Dissolve required dosage in a small amount of water, wine or must and add homogenously to the product.

Health and Safety Warning:

E 224 Pure Potassium Metabisulphite K2S2O5
C.A.S. number 16731-55-8


  • Causes serious eye damage
  • Wear eye protection / face protection: wear eye glasses with side protection.
  • IF IN EYES: Rinse cautiously with water for several minutes.
  • Remove contact lenses, if present and easy to do.
  • Continue rinsing.
  • Immediately call a doctor / physician.