Pipettor including an indicator and method of use
US6123905A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1997 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Jan 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/1023
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pipettor including a body portion, a cylinder having an interior channel, and a filter plug disposed within the channel is disclosed. The filter plug may include a plurality of pores and may preferably be treated with a first chemical, so as to affect closure of the pores when the filter plug contacts a pipetted fluid. The pore closure helps contain leakage of the fluid into the pipettor by sealing the pipettor to additional fluid flow. The filter plug may also be treated with a second chemical to affect a change in the color of the filter plug upon contact with the pipetted fluid. The color change acts as a signal to an operator that possible contamination of the pipettor has occured. The color change and/or closure may also be affected by an aerosol generated from the pipetted fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.