Patent ID: 6939450
Filing Date: 2005-09-06
Classification: B01L,C12Q,G01N

Abstract:
1. A sensor strip comprising: (a) a base layer having a first major surface and a second major surface; (b) a cover layer having a first major surface and a second major surface, the first major surface of said cover layer facing the first major surface of said base layer; (c) a spacer layer interposed between the first major surface of said cover layer and the first major surface of said base layer to separate said cover layer from said base layer; (d) a flow channel having walls formed by said first major surface of said cover layer, said first major surface of said base layer, and said spacer layer, said flow channel having a reaction site therein, wherein said reaction site includes an electrode arrangement, said flow channel being of such dimensions that a liquid sample can be drawn therein and can flow therethrough by means of capillary attraction; (e) a flow-terminating interface applied to or formed in said first major surface of said cover layer, said flow-terminating interface capable of terminating flow of a sample of liquid in said flow channel at said flow-terminating interface; (f) a sample application zone, where a liquid sample is introduced into said flow channel; and (g) at least one opening communicating with said flow channel to allow gas to be vented from said flow channel.