This part of ISO 12080.IDF 142 specifies a colorimetric method for the determination of vitamin A in driedskimmed milk containing at least 10 IU (International Units) of vitamin A per gram.
DS/ISO 12080-1:2009 history
2009DS/ISO 12080-1:2009 Dried skimmed milk - Determination of vitamin A content - Part 1: Colorimetric method