Patent ID: 7393502
Filing Date: 2008-07-01
Classification: B01L,Y10T

Abstract:
1. A test device for analyzing a specific component in a test solution by reaction with a reagent by allowing the test solution introduced into the device to react with the reagent in the device, said device comprising a capillary tube having a feed opening for introducing the test solution, and an air outlet, said capillary tube including a first hydrophilic region for transferring the test solution from the feed opening to a reagent in the capillary tube, a second hydrophilic region having a surface having a predetermined area for maintaining the reagent in the capillary tube, a hydrophobic region having a surface coplanar with the surface of the second hydrophilic region, the hydrophobic region separating the first hydrophilic region from the second hydrophilic region and communicating with the air outlet without passing through the first and second hydrophilic regions, and a groove poorer in wettability than the second hydrophilic region at the boundary between the surface of the hydrophobic region and the surface of the second hydrophilic region, said groove having a depth that is offset from the coplanar surfaces of the hydrophobic region and the second hydrophilic region.