Demands for analysis of amino acids that induce metabolic errors continue to exist. Model L-8900, the latest generation in a long line of Amino Acid Analyzers from Hitachi, is a dedicated system capable of simultaneously identifying and quantifying fifty (50) physiological amino acids for the purpose of clinical diagnosis. Unparalleled performance is achieved via a high-resolution 3 µm ion exchange resin, a patented reaction column to eliminate band broadening, and a unique ninhydrin delivery system with no pre-mixing required. The same system configuration can also be used to analyze amino acids related to specific metabolic errors in a shortened time.