Modular flow injection analysis system

摘要

A modular flow injection analysis system has a sample connection, a reagent inflow and a media discharge. The analysis system is formed of a plurality of functional modules stacked one on top of the other. These functional modules include a metering module including a metering channel having an inlet and an outlet, a mixing module including a mixing channel having an inlet and an outlet, an analysis module including a media chamber connected to the outlet of the mixing channel, and a media control module. The modules are connected by aligned media channels. These media channels replace the conventional tube connections. They are connected automatically when the modules are fitted together.

主权项

1. A modular flow injection analysis system comprising a sample inflow, a reagent inflow and a media discharge, formed of a plurality of functional modules which are stacked one on top of the other and at least include:
a) a metering module including a metering channel having an inlet and an outlet; b) a mixing module including a mixing channel having an inlet and an outlet; c) an analysis module including a media chamber connected to the outlet of the mixing channel; d) a media control module; characterized in that:
the metering channel having a length and a cross-section determining the amount of the reagent supplied;the modules have passage openings which are all in alignment with each other to define a continuous media channel by which the modules are connected and the media channel is connected to a sample connection;the media control module selectively connects one of the sample inflow and the reagent inflow to the inlet of the metering channel of the metering module by a valve control;the media control module selectively connects the outlet of the metering channel to one of the inlet of the mixing channel and a reagent discharge by a valve control; andthe media control module operable to measure out a specific quantity of reagent by controlling the reagent inflow to the inlet of the metering channel and connecting the outlet of the metering channel to the reagent discharge for a period of time to ensure that the metering channel is completely filled with the reagent.