Campden Tablets (Potassium Metabislufite) - 5 Pound Bag - Approximately 840 tablets.
Typical usage prior to fermentation: 2 tablets per gallon of grape wine, fruit wine, or cider. This equals approximately 60 ppm free SO2.
Typical usage after fermentation: 5 tablets per gallon (1 tablet per 750ml bottle) of grape wine, fruit wine, or cider. This equals approximately 150 ppm free SO2.