MAGNETIC-LABEL SENSOR AND CARTRIDGE

摘要

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 (Bl, 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).