Automation of Gas Chromatography--Concepts, Characteristics and Impact on Future GC Instrument Design

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Abstract
Five conceptual approaches to automation of the gas chromatograph and the GC laboratory are described. These include the off-line system, hybrid system, time-shared system, multi-channel dedicated system, and the dedicated computer. The characteristics, advantages and disadvantages of each are compared and contrasted. Tables of selection criteria have been developed to facilitate the comparison and evaluation of chromatography data systems. Use of these tables can aid the novice laboratory to facilitate the establishment of the functions, features, and specifications for the optimum data system for a given environment. The potential of total automation of the gas chromatograph made feasible by the availability of the low-cost general-purpose digital computer is discussed. The limitations and the capabilities of today's GC instruments designs are reviewed with emphasis on the performance limiting aspects. Improved performance and increased flexibility made feasible by use of the computer's logic and control are described.

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