The present invention relates to a method and apparatus for
chromatographically analyzing each of a plurality of samples in detector,
comprising an autosampler to contain a plurality of samples for
chromatographic analysis and a plurality of chromatographic systems, each
system comprising one or more pumps and one or more chromatography
columns. A detector is included for detecting compounds in the samples
from each of the chromatography systems along with a valve positioned
between the detector and the plurality of chromatography systems, the
valve permitting each sample to reach the detector in sequence. A
computer control device is included which adjusts the introduction of
samples from the autosampler into the plurality of chromatography systems
as well as the position of the valve to sequentially separate and deliver
compounds within the samples to the detector.