Incremental absorbance scanning of liquid in dispensing tips
US6235534A · kind A · utility
63Cited by
7References
11Claims
0Family size
Inventors
Key dates
| Filing date | Mar 9, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Mar 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/119163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for detecting improper liquid content of a metering tip of an analyzer. The method detects the content or status using radiation between 630 and 2000 nm, and comprises the steps of: a) aspirating the liquid into the tips; b) scanning the liquid; c) providing relative motion between the tip and the scanner while simultaneously scanning the liquid; d) detecting the amount of light transmitted to detector at all levels of the liquid; e) comparing the detected light with light known to be transmitted at levels of liquid free of air bubbles; and flagging the results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.