Calculation of active molecular SO2

Calculate the molecular sulfur content of your wine and correct it to reach the minimum protection range (0.4 mg/L ) for risk-free wines (G+F&lt<0.4 g/L and/or absence of polluting populations); or the maximum range of protection   (0.6 mg/L)  for wines with risk (G+F>0.4 g/L and/or presence of polluting populations).

  • Free sulfur dioxide in wine is dissociated into 3 chemical forms: molecular sulfur, bisulfite ion and sulfite ion.
  • The balance between the different chemical forms is a function of the pH, the alcoholic strength and the storage temperature of the wine.
  • The only active form in terms of protection against contaminating microorganisms (e.g. Brettanomyces) is molecular sulfur.

Calculate the active molecular SO2

 

Results

  mg/L
Active SO2 in the wine
Protection MIN. Active SO2 Activo 0.4
Free SO2 required
Free correction
MAX protection. Active SO2 0.6
Free So2 required
Free correction