Sample analysis with mirrors

A device, comprising:

• a plate comprising a sample deposition tube adapted to receive a sample comprising one or more analytes, the sample deposition tube defining a vertical axis substantially perpendicular to a main surface of the plate;
• a first magnet and a second magnet disposed adjacent to the sample deposition tube to impart a magnetic field that is inside the sample deposition tube;
• wherein each of the first and second magnets comprises a first pole and a second pole, and the first pole of the first magnet faces the first pole of the second magnet;
• and
• a third magnet disposed underneath the first magnet and a fourth magnet disposed underneath the second magnet;
• wherein each of the third and fourth magnets comprises a first pole and a second pole, and the second pole of the third magnet faces the second pole of the second magnet.

A method comprising:

• providing a device comprising:
• a plate comprising one or more sample deposition tubes adapted to receive one or more samples comprising one or more analytes, each of the one or more sample deposition tubes defining a vertical axis substantially perpendicular to a main surface of the plate;
• and
• one or more mirrors positioned to project, substantially parallel to the main surface of the plate, an image of each of the one or more sample deposition tubes along its vertical axis, so as to allow determination of the vertical location of the one or more analytes inside each of the one or more sample deposition tubes;
• depositing a sample comprising one or more analytes into one or more of the sample deposition tubes;
• allowing the one or more analytes to migrate to a position at least partially determined by its density;
• and
• projecting, substantially parallel to the main surface of the plate, an image of each of the one or more sample deposition tubes along its vertical axis to determine the vertical location of the one or more analytes inside each of the one or more sample deposition tubes.