Method and apparatus for controlling a stream of liquid test...

Details Method and apparatus for controlling a stream of liquid test... Method and apparatus for controlling a stream of liquid test...

2005-03-29

2005-03-29

Warden, Jill (Department: 1743)

Chemistry: analytical and immunological testing

Automated chemical analysis

With a continuously flowing sample or carrier stream

C436S052000, C436S054000, C436S180000, C422S063000, C422S081000, C422S105000, C422S105000, C422S108000

Reexamination Certificate

active

06872571

ABSTRACT:
A method and apparatus for controlling a stream of liquid and air segments wherein the liquid and air segments are selectively aspirated into a first fluid conduit in a plurality of cycles, each cycle beginning with the aspiration of a first air segment and ending with the aspiration of a final air segment. The liquid and air segments are then transferred from the first fluid conduit to a second fluid conduit. The volume of the final air segment of each cycle is then adjusted after the final air segment has moved into the second fluid conduit. Next, the liquid segments and the air segments of each cycle are transferred from the second fluid conduit to a third fluid conduit. The volume of the first air segment of each cycle is then adjusted after the first air segment has moved into the third fluid conduit.

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