Abstract: The invention relates to a magnetic sample-processing device, particularly a sensor device (100), that comprises two electromagnets (110, 120) for generating a magnetic field (B) in a first and a second sample chamber (SC1, SC2) located adjacent to each other in an x-direction. The poles of the electromagnets are disposed below the first and the second sample chamber (SC1, SC2), respectively, next to each other in a perpendicular y-direction. Moreover, the electromagnets are individually controlled by a control unit (130). In a preferred embodiment, the distance between the electromagnets (110, 120) in x-direction is so large that magnetic cross talk can be neglected. In another embodiment, said distance is close, and the electromagnets are operated in a synchronized way.

Abstract: The invention relates to a magnetic sample-processing device, particularly a sensor device (100), that comprises two electromagnets (110, 120) for generating a magnetic field (B) in a first and a second sample chamber (SC1, SC2) located adjacent to each other in an x-direction. The poles of the electromagnets are disposed below the first and the second sample chamber (SC1, SC2), respectively, next to each other in a perpendicular y-direction. Moreover, the electromagnets are individually controlled by a control unit (130). In a preferred embodiment, the distance between the electromagnets (110, 120) in x-direction is so large that magnetic cross talk can be neglected. In another embodiment, said distance is close, and the electromagnets are operated in a synchronized way.

Abstract: A cartridge (1,3) for a magnetic-label sensor, in particular for a magnetic-label biosensor, comprises a sensor area (4) a fluid channel (2) in contact with said sensor area and first (A) and second (B1, B2) reservoirs in fluid communication with said fluid channel. The first reservoir comprises a first type of magnetic particles (8) and the second reservoir comprises a second type of magnetic particles (8a). The first type of magnetic particles are functionalized for binding with said sensor area, whereas the second type of magnetic particles are non-functionalized for binding with said sensor area. The magnetic particles (8, 8a) are manipulated using magnet (13). Detection is based on frustrated total internal reflection (FTIR) is hereby light from laser/LED (II) is reflected at sensor area (4) and detected by photodetector/CCD(12).