Analyzing cartridge and liquid feed control device

Details Analyzing cartridge and liquid feed control device Analyzing cartridge and liquid feed control device

2005-02-14

2009-12-01

Warden, Jill (Department: 1797)

Chemistry: analytical and immunological testing

Optical result

With claimed manipulation of container to effect reaction or...

C436S180000, C422S051000, C422S051000, C422S070000

Reexamination Certificate

active

07625760

ABSTRACT:
An analyzing cartridge and method for using it to analyze a sample having a plurality of reservoirs and capillaries connected for communication between these reservoirs and is provided therein with a reagent required for analysis. The reservoirs are provided with openings leading to the outside of the cartridge, and the openings are covered with vents each consisting of a gas-permeable
on-liquid-permeable, hydrophobic, porous membrane. The analyzing cartridge requires only trace amounts of a sample and a reagent and no maintenance. It is provided with a non-fluid reagent in vent-carrying reservoirs thereby making it possible to formulate a very trace amount of reagent solution in the cartridge by injecting a reagent dissolving liquid into the reservoirs immediately before analyzing. A liquid feed control device controls the feeding of the liquid between the reservoirs via the capillaries when it is attached to the cartridge to allow or control the entry/exit of air via the vents.

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