A premix is a powdered blend of vitamins and minerals that flour millers use for fortification. Premixes are usually prepared with diluents so they can be added to flour at a standard dosage rate such as 200, 250, or 300 grams per metric ton. A premix allows a miller to add several micronutrients at the same time to our. A standard premix specication also allows millers to compare prices from different suppliers on a standardized basis which will prevent pricing and costing errors. It has a vegetarian source of origin.