A draft protocol in ISO format for the improved gas chromatographic method for the determination of the total and the free adipate content in acetylated adipyl cross-linked starches is evaluated by an international collaborative study. The improvements in the method provide an analytical protocol in which the amount of organic solvent needed for each determination was reduced tenfold and the daily capacity of the analyses was increased threefold. This international collaborative study led to the following results: (1) for the total adipate determination the repeatability (r) and reproducibility (R) were respectively 50 and 90 ppm adipic acid and (2) for the free adipate determination the repeatability (r) and the reproducibility (R) were respectively 12.6 and 27.2 ppm adipic acid.