| abstract |
An object is to improve in-plane uniformity in a cell. A channel 601 is provided on a base sequence detection chip 21 and is provided along a direction in which a chemical solution or air flows by a chip cartridge upper lid 112 and a sealant 24a. A plurality of working electrodes 501 are provided and the probe is fixed, and a plurality of working electrodes are provided on the inner peripheral surface of the flow path, one for each of the working electrodes 501, each of which is positioned on a plane parallel to the chip surface. A plurality of counter electrodes 502 are arranged, and a plurality of reference electrodes 503 are provided on the inner peripheral surface of the flow path 601, one for each of the working electrodes 501, each being arranged on a plane parallel to the chip surface. A feed port 116a for feeding a chemical solution or air from the upstream side of the flow channel 601 into the flow channel 601; a delivery port for sending a chemical solution or air in the flow channel from the downstream side of the flow channel; Inside road 601 It consists injection port 119 for injecting a sample. [Selection diagram] FIG. |