In response to the increasing need for more rigorous melamine and cyanuric acid testing, the
US Food and Drug Administration (FDA) has set three different commodity-based minimum
reporting levels (MRLs): 10μg/g for pet food, 2.5μg/g for human food, and 1μg/g for infant
formula.1,2 These limits place stringent demands on the analyst to demonstrate adequate
instrument sensitivity. The following work was performed to establish conditions for
melamine analysis down to 1μg/g in infant formula and is based on the FDA method,GCMS
Screen for the Presence of Melamine, Ammeline, Ammelide, and Cyanuric Acid.1 Please
refer to this FDA method for overall experimental design and semi-quantitative calculations.