How Much Sodium Metabisulfite per Litre of Wine?
The typical amount of sodium metabisulfite used for wine is:
- For sterilizing must or equipment: 1-2 grams per litre
- For protecting wine during racking, bottling, or storage: 0.5 grams per litre (about 50-60 mg/L of free SO₂)
A common home winemaking dose is 1/4 teaspoon (about 1.3 grams) per 5 litres of wine, which equals approximately 0.26 grams per litre.
Note: The precise amount depends on the wine's pH. Lower pH requires less metabisulfite. Always measure free SO₂ with a testing kit for best results.
