Method and apparatus for liquid dispensing

Details Method and apparatus for liquid dispensing Method and apparatus for liquid dispensing

2003-04-22

2010-06-15

Gordon, Brian R (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

C073S863320, C073S864000, C073S864010, C073S864020, C073S864110

Reexamination Certificate

active

07736591

ABSTRACT:
The present invention relates to a ceramic tip and a random access print head for the transfer of microfluidic quantities of fluid. The print head can randomly collect and deposit fluid samples to transfer the samples from a source plate to a target. The print head can also be programmed to create a direct map of the fluid samples from the source plate on the target or to create any desired pattern or print on the target. The tip and print head can be used for a wide variety of applications such as DNA microarraying and compound reformatting. In one preferred embodiment, the tip is used as a capillary or “gravity” pin to draw or collect source fluid and “spot” or deposit the fluid onto the target via physical contact (touch-off). In another preferred embodiment, the tip is used in conjunction with an aspirate-dispense system to actively aspirate source fluid and deposit the fluid via a contact or non-contact approach. The tip provides improved, accurate and repeatable microfluidic transfer.

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