...the headspace mode

With the syringe only concept of the CombiPAL a headspace technology has been introduced to eliminate the headaches commonly associated with conventional autosamplers. The robotic vial processing operation allows sample analysis in a straightforward and simple way. Sample vials are transported into
the heated six position incubator for preconditioning. After reaching the equilibration, a heated gas-tight syringe is moved over the incubator and the headspace sample is withdrawn. After sample injection the hot syringe is automatically cleaned by purging with inert gas. No complicated error prone operations e.g. vial pressurization, valve switching, loop filling or heated transfer lines are involved. For maximum throughput, the intelligently controlled vial transfer into the incubator oven ensures that a sample is always ready to be injected when the previous run is completed.
Beside the simple and transparent sample operation the CombiPAL offers even more advantages over conventional headspace sampling:

• eliminates dead volume and adsorption effect in s ample loops and transfer lines

• permits adjustable s ample volumes without sample loop changes

• no sample dilution due to vial pressurization