| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that an ion-exchange membrane having microscopic pores is formed of a mesh structure in which water can creep into the pores, that one side of the ion-exchange membrane comes into contact with a sample solution while the other side comes into contact with an internal solution when the ion-exchange membrane is assembled into a sensor mainframe, that water in the internal solution can gradually permeate the membrane so as to be moved to the side of a sample flow channel, and that the performance of the sensor is lowered due to a reduction in a conductivity across the internal electrode and the ion-exchange membrane when the sensor is used for a long period. <P>SOLUTION: In the ion sensor, the flow channel in which a sample flows, the ion- exchange membrane which is installed so as to come into contact with the sample in the flow channel, the internal solution which is installed so as to come into contact with a side not coming into contact with the sample of the ion-exchange membrane and an internal electrode which is installed so as to come into contact with the internal solution are arranged inside a sealed container. A face which does not come into contact with the sample of the ion-exchange membrane is coated and treated with a two-component mixed epoxy resin. <P>COPYRIGHT: (C)2003,JPO |
