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An automated apparatus to assist in the development of analytical continuous flow methods is described. The system is capable of controlling and monitoring a variety of pumps, valves, and detectors through an IBM PC-AT compatible computer. System components consist of two types of peristaltic pumps (including a multiple pump unit), syringe pumps, electrically and pneumatically actuated valves, and an assortment of spectrophotometric and electrochemical detectors. Details of the interface circuitry are given where appropriate. To demonstrate the utility of the system, an automatically generated response surface is presented for the flow injection determination of iron(II) by its reaction with 1,10-phenanthroline.

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A computer-controlled automatic analyzer has been developed to facilitate the rapid development of novel analytical methods based on flow Injection analysis (FIA) through the use of mathematical techniques such as modified simplex optimization. The apparatus allows variation of flow rates, pH, and reagent concentration In one or more sample or carrier streams and can accommodate spectrophotometric or electrochemical detectors. The system software, written In BASIC, Is menu-driven and Interactive. It Includes a modified

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