What is the difference between nonfat dry milk (NFDM) and skimmed milk powder (SMP)?
Skimmed milk powder is defined by Codex Alimentarius. Nonfat dry milk is defined by the Code of Federal Regulations. The main difference between the products is the adjustment of protein level. The protein content of SMP can be adjusted by the addition of milk retentate, milk permeate, or lactose. The protein content of SMP is typically lower than the protein content of NFDM. See the Dried Dairy Ingredient Handbook on this website, pages 9 and 11 for composition information.