Arkray, Inc.

Kotaro Kado

Koji Katsuki

Hisashi Okuda

Yoshimi Oura

Norimasa Noda

The present invention relates to a technique for measuring the concentration of a particular component in a sample liquid using a test tool (). The test tool () includes a first through a third detection elements (-) arranged in the mentioned order in the moving direction of the sample liquid for measuring an electro-physical quantity. The present invention provides a concentration measuring method which includes a first detection step for detecting whether or not liquid conduction is established between the first and the second detection elements (), a second detection step for detecting whether or not liquid conduction is established between the second and the third detection elements (), a measurement step for measuring an electro-physical quantity by using the first through the third detection elements (-), and a concentration computation step for computing the concentration of the particular component based on the electro-physical quantity. The present invention also provides a concentration measuring apparatus () for realizing the concentration measuring method.

Concentration measuring method and concentration measuring apparatus

The present invention relates to an analyzing implement () having a capillary for movement of a specimen liquid. The capillary has inner surfaces () provided with a first and a second opposed electrodes opposed to each other. The implement () includes, for example, a substrate (), a cover () and a spacer () between the substrate () and the cover (). In this case, the capillary is provided by the substrate (), the cover () and the spacer (). Preferably, capillary forming surfaces () of the spacer () are electrically conductive, in which case the surfaces () provide the first and the second electrodes.

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Kyoto, Japan

Kotaro Kado