Patent ID: 8337705
Filing Date: 2012-12-25
Classification: B01L,B03C,G01N

Abstract:
1. A liquid system (LS) device comprising a first and a second inlet for a first and a second liquid mobile phase, a means for producing two different fluid connecting states, and an extractor having (i) an entry port, (ii) an exit port, (iii) a section between said entry port and said exit port, the section comprising a fluid connecting line, and (iv) a means for temporarily applying a local magnetic field to the fluid connecting line in the section, wherein the first inlet, the second inlet and the extractor are each fluidly connected to the means for producing two different fluid connecting states, the means for temporarily applying a local magnetic field to the fluid connecting line in the section comprises a rotatable circular disk with a controllable actuator for adjusting the disk, by way of rotation, in a first and a second position; a fraction of the circumference of the disk is located in proximity to the fluid connecting line of the section; in a segment of the disk, one or more permanent magnets are attached; in a first position of the disk, the magnetic field of the one or more magnets is applied to the fluid connecting line of the section; and in a second position, the magnetic field applied to the fluid connecting line of the section is reduced.