| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring chip capable of securing a material such as a physiological active material to the surface. SOLUTION: A measuring chip A requires a solution to be held on the surface for a preset time. In this case, the measuring chip A includes at least a substrate 1 and surface layers 2, 3 laminated on the substrate 1. The surface of the substrate 1 is provided with higher affinity to the solution than that of the surface layer 3 and the surface layers 2, 3 are provided with grooves 30 ranging to the surface of the substrate 1.
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