Zero volume flow cell

Details Zero volume flow cell Zero volume flow cell

1979-12-05

1981-07-21

McGraw, Vincent P.

Optics: measuring and testing

Sample, specimen, or standard holder or support

Fluid containers

356410, G01N 2105, G01N 2113

Patent

active

042795095

ABSTRACT:
A flow cell for optical analysis of a fluid sample has a cell chamber whose volume is not limited by considerations of fluid residue carryover. A piston movable within the viewing region and having a conduit through its face is used to collapse the volume of the viewing region to substantially zero while maintaining a flow path between inlet and outlet conduits so that residue can be removed from the flow cell and its conduits with a minimum of cleaning fluid.

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patent: 3999861 (1976-12-01), Bellinger
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patent: 4008397 (1977-02-01), Zdrodowski
patent: 4021123 (1977-05-01), Atwood et al.
patent: 4027983 (1977-06-01), Abrahams
patent: 4141954 (1979-02-01), Shigetomi

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