Apparatus for testing pipetting needle linearity in an automated analyzer
US5512247A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1995 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Apr 11, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/114998
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An analyzer has a horizontally disposed baseplate on which primary containers and secondary containers are disposed, a pipetting needle, a transport device, and a control device. The pipetting needle is formed of an electrically conductive material and is connected to a metering device by a tubing, and is for transferring a predetermined volume of liquid each time from a primary container to a secondary container. The transport device is for the controlled transport of the pipetting needle in three directions at right angles to one another, two of the transport directions extending horizontally and the third transport direction extending vertically. The control device is for controlling the metering device and the transport device. For the purpose of testing the linearity of the pipetting needle the analyzer includes a device for guiding the tip of the pipetting needle around the periphery of the top edge of a reference body (the tip of the pipetting needle is guided at a specific distance from the top edge of the reference body, which distance is a measure of the acceptable curvature of the pipetting needle), and an electrical circuit for detecting electrical contact between the t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.