Multichannel device for analysis of solution samples and process of supplying two or more branches of such a multichannel system

摘要

It is an object with only a single pump and a single splitting device to feed at least two hydraulically communicating with each capillary columns with a constant delivery rate of the pump by means of supplying all kept constant pressure system of the invention. is proposed to a multi-channel system for the analysis of the dissolved samples by capillary liquid chromatography, with only one pump (1; 21) for generating a continuous discharge flow rate of a mobile phase in a main flow duct (2) as the feed system. Two or more than two through which a greatly reduced proportion of the delivery flow capillary columns channels (5) are connected to the flow channel (2,26). A discharge line (8) in a downstream end portion of the flow channel (2,26) is provided for deriving a major portion of the flow over a discharge cross-section (15) which is variable in response to pressure changes in the feed system is that the plurality of capillary Trennsäulen- channels (5) of the much smaller (split) portion is zuspeisbar as the mobile phase in each case at a substantially constant pressure.