Patent ID: 6813568
Filing Date: 2004-11-02
Classification: B01J,B01L,F16K,G01N

Abstract:
A system for carrying out one or more chemical reactions, said system comprising a rotary selector valve and a rotary switching valve, each valve under the control of a computer, the internal volumes of the selector and switching valves each being 1.5 &mgr;l or less wherein the rotary selector valve comprises, in a first unit, a central common port and a circular array of a plurality of peripheral ports such that the main axis of the common port is the same as is the main axis through the circular array, and wherein said valve comprises, on a second unit, a radial connector channel, the first and second units being juxtaposed such that there is a single continuous selector channel formed by the common port, the connector channel, and a peripheral port, the selection of the peripheral port under control of the computer, the internal volume of the continuous selector channel being the internal volume of the valve, andwherein the rotary switching valve comprises a circular array of three or more peripheral ports in a first unit and a connector channel in a second unit, the two units being juxtaposed such that there is a continuous switching channel formed by a first peripheral port, the connector channel, and a second peripheral port, the selection of two peripheral ports being under the control of the computer, the internal volume of the continuous switching channel being the internal volume of the valve.