dosierapparat to probeneinfuehrung in gas chromatograph

摘要

A system for the introduction of a liquid, a vaporous or a gaseous sample into gas chromatographs comprises a sampler unit and a sample inlet unit. The two units intercommunicate by means of passages provided with sealing bushings in which a metering element moves which is formed as a bent tube with rods. The metering element is filled with a sample at the instant the ports of the tube communicate with the chambers of the sampler unit, and the sample introduction process is effected at the instant the ports of the tube communicate with the chambers of the sample inlet unit. The sample is forced out of the metering element due to the pressure differential between the sample receiving chamber and the over-pressure chamber.