Knowledge

Sodium Metabisulfite Dosage Per Litre

The amount of sodium metabisulfite required per litre depends on the intended use, such as winemaking, water treatment, or food preservation.

• Winemaking (as a sterilizer):
  Typically, use 0.44 grams (440 mg) of sodium metabisulfite per litre of must or wine to achieve about 50 ppm (parts per million) of free SO₂.
• Water Treatment (as a disinfectant):
  Dosages can vary; for regular disinfection, 1 gram per litre is common.
• Food Preservation:
  Refer to food-safe guidelines, but it's often around 0.1 to 0.5 grams per litre, depending on the food type and regulations.

Always ensure the dosage matches your specific application and safety standards.