Ingredient Sulfites
Sulfites are entered as a nutrient from the Ingredient Nutrients screen as parts per million (ppm).
A ppm measurement is constant for an ingredient, regardless of the amount of the ingredient. So the ppm of one raisin would be the same as for a pound of raisins, similar to a percentage.
The program converts the ppm (mg/kg) to mg per ingredient weight.
Sulfites[mg] = (sulfites[ppm] x weight[g]) / 1000g
Recipe Sulfites
The program scales the sulfites [mg] per ingredient weight in the recipe to calculate the total amount of sulfites in the full recipe.
Example Ingredients:
Example Recipe:
The program then converts the recipe's sulfite weight back to ppm to determine if a declaration is needed.
Sulfites[ppm] = (recipe total sulfites[mg] x 1000g) / recipe weight[g]