Inventors:
G. Richard Cathcart - San Carlos CA
Thomas Brennan-Marquez - Sunnyvale CA
John A. Bridgham - Hillsborough CA
George S. Golda - El Granada CA
Harry A. Guiremand - Half Moon Bay CA
Marianne Hane - Burlingame CA
Louis B. Hoff - Belmont CA
Eric Lachenmeier - Cupertino CA
Melvyn N. Kronick - Palo Alto CA
Douglas H. Keith - Oakland CA
Paul E. Mayrand - Pacifica CA
Michael L. Metzker - San Bruno CA
William J. Mordan - Mountain View CA
Lincoln J. McBride - Belmont CA
John Shigeura - Fremont CA
Norman M. Whiteley - San Carlos CA
Assignee:
Perkin Elmer - Applied Biosystems Division - Foster City CA
International Classification:
G01N 2101, G01N 3508, G01N 110, G01N 2111
Abstract:
A liquid-handling instrument has a worksurface with registration for modular stations to support containers of liquid, pipette apparatus with a pipette tip coupled to a sensing circuit, a robotic translation system for moving the pipette tip, and a control system with an iconic user interface for programming and editing. A gauge block registered on the worksurface provides for calibration using the sensing tip, and register cavities on the worksurface provide for modular stations. There is a wash station fop the pipette tip on the worksurface. An automated laboratory based on the liquid-handling system has heating and cooling and a sealable incubation station as well as a magnetic separation station. Methods are disclosed using the apparatus to convey droplets of liquid, to aspirate with minimum tip contamination, to mix liquids in containers, and to validate the worksurface. A duck-billed closure is disclosed for minimizing evaporation and cross-contamination during processing, and is a part of a container disclosed for storing and transporting liquids.