Automatic pipetting apparatus with leak detection and method of

Details Automatic pipetting apparatus with leak detection and method of Automatic pipetting apparatus with leak detection and method of

1995-06-07

1996-07-23

Noland, Thomas P.

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386414, 7386301, 73 40, G01N 3510, G01M 326

Patent

active

055378803

ABSTRACT:
Embodiments described herein provide a pipetting apparatus with leak detection and a method for detecting a leak. In one embodiment, an automatic pipetting apparatus comprises a nozzle having a lower end portion through which a fluid sample is aspirated and dispensed by changes in air pressure supplied to the nozzle. A piping system operatively connects the nozzle to a pump for supplying the air pressure to the nozzle. A pressure sensor is operatively connected with the piping system for measuring internal pressure in the piping system. An XYZ robot is operatively connected with the nozzle for three-dimensionally moving the nozzle between an aspirating position of the fluid sample and a dispensing position. A leak detector is operatively connected with the pressure sensor for detecting a leak in the piping system based upon a measured result obtained by measuring the internal pressure in the piping system with the pressure sensor while the nozzle, which has aspirated a predetermined volume of the fluid sample, is being moved between the aspirating position and the dispensing position by the robot.

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