G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 35/10 (2006.01) G01B 7/28 (2006.01)
Patent
CA 2147737
An analyzer comprising the following components: a horizontally disposed baseplate (12) on which primary containers (13 and 23) and secondary containers (31) are disposed; a pipetting needle (42) consisting of an electrically conductive material and connected to a metering device (96) by a tubing (99), for transferring a predetermined volume of liquid each time from a primary container (13 and 23) to a secondary container (31); a transport device (51 - 55) for the controlled transport of the pipetting needle (42) in three directions at right angles to one another (the X, Y and Z directions), two of the transport directions (X and Y directions) extending horizontally and the third transport direction (Z direction) extending vertically; and a control device for controlling the metering device (96) and the transport device (51 - 55). For the purpose of testing the linearity of the pipetting needle (42) the analyzer further comprises the following means: means for guiding the tip of the pipetting needle (42) around the periphery of the top edge of a reference body (45), the tip of the pipetting needle (42) being guided at a specific distance (d) from the top edge of the reference body (45), which distance is a measure of the acceptable curvature of the pipetting needle, and an electrical circuit for detecting an electrical contact between the tip of the pipetting needle (42) and the reference body (45).
Bonacina Guido Richard
Caratsch Thomas Martin
Moser Rolf Xaver
F. Hoffmann-La Roche Ag
Gowling Lafleur Henderson Llp
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