Patent ID: 7201042
Filing Date: 2007-04-10
Classification: C12Q,G01N

Abstract:
1. A measuring instrument comprising: a channel comprising a sample inlet opening and an exhaust opening, the channel allows for moving a sample liquid containing a solid component from the sample inlet opening toward the exhaust opening and for providing a liquid reaction field; a first electrode and a second electrode which are used to apply voltage to the liquid reaction field, wherein a distance from the sample inlet opening to the first electrode is greater than a distance from the sample inlet opening to the second electrode, wherein the first electrode comprises an electron transfer interface for providing electrons to the liquid reaction field or receiving electrons from the reaction field when voltage is applied to the liquid reaction field via the first and second electrodes; a concentration means for increasing the concentration of the solid component in a part in which solid component contacts the electron transfer interface in the liquid reaction field; and a water-absorbing layer positioned only downstream from the second electrode in a flow direction of the sample liquid, wherein the water-absorbing layer allows flow of the sample liquid from the sample inlet opening toward the second electrode but restricts flow of the sample liquid from the first electrode toward the exhaust opening.