Simple Sulfite / Sulfate calculator to support home winemaking. Calculations assuming: PotMetaBiSulfite @ 57% sulfur dioxide; Campden Tablets @ .55 grams of PotMetaBiSulfite; 1 tsp of PotMetaBiSulfite = 6.2grams. This program is in Beta. It is to be used as a cross reference to a reliable source. Content rating: Everyone