Chromatography is widely considered the backbone of analytical chemistry testing within the FDA regulated industries. For instance, most compendial monograph methods for testing pharmaceutical products utilize some chromatographic techniques. Dietary supplements, in particular, are often comprised of a greater number of compounds and require significantly greater separation than pharmaceutical materials. It is necessary to leverage the power of chromatography to achieve the required separation. For these reasons, GPA retains a team of very experienced senior analysts who are very proficient in the use of our state-of-the-art chromatography instrumentation, including GC, GC-MS, HPLC, LCMS, and TLC.