Patent ID: 8828321

Claim:
A reactor comprising: a main body having a flow path substrate made of silicone and a crystal substrate having a surface bonded to a surface of the flow path substrate, the surface of the flow path substrate having a concave portion forming with the surface of the crystal substrate a flow path for running a sample to be measured and a reactor tank connected to the flow path; capture means disposed in the reactor tank for capturing a specific substance contained in the sample to be measured; and a sensor configured to measure a physical quantity of the specific substance contained in the sample and captured by the capture means, the sensor including a crystal oscillator comprising at least a portion of the surface of the crystal substrate and configured to be excited by a plurality of electrodes above which the reactor tank is disposed, and including frequency measuring means connected to the plurality of electrodes for measuring a change in frequency of the crystal oscillator; wherein the plurality of electrodes comprise a first electrode disposed on a first surface of the crystal substrate and a second electrode disposed on a second surface of the crystal substrate opposite to the first surface, the first electrode comprising a detection electrode on which the reactor tank is directly disposed.