Assays Based on Gas Chromatography or HPLC

Although in principle it is possible to simply use several GC instruments each equipped with a sample manager and a separate PC, this is really not efficient because it is expensive, and at the same time data handling becomes tedious. The first successful construction consisted of two GC instruments (e.g., GC instruments and data bus HP-IB) are commercially available from the firm Hewlett-Packard, Waldbronn, Germany), one prep-and-load sample manager PAL) (commercially available from CTC, Schlieren, Switzerland) and one PC 102). 

Recently, this system has been extended to include three GC instruments operated by one PC (Fig. 12) 103,104). Experience has shown that a single sample manager for all three GC instruments may cause problems because it is difficult to construct identical columns 104). Therefore, three sample managers were employed 

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