| 摘要 |
PURPOSE:To lengthen a life of electrode by intervening a suppressor film suppressing the traveling of plasticizer in a sensitive film between the electrode body and the sensitive film. CONSTITUTION:A suppressor film 14 is a ring-shaped substance of the same shape to the end surface of the body 5 and the material thereof is formed by well mixing plasticizer 67%, PVC 30% and ligand 3%. In place of said PVC an acrylic resin, polyethylene resin or fluorine resin can be used. Said suppressor film 14 is intervened between the sensitive film 2 and the body to be formed en bloc by adhesives 13, then the plasticizer in the suppressor film 14 first travels to the body 5 having a low content of plasticizer and next the plasticizer in the sensitive film 2 travels to delay the degenerating and hardening speed of the sensitive film 2. Accordingly the ligand in the sensitive film 2 travels freely in the film for a long time. Accordingly and acts to circulate the ions in the sample solution to the inside solution. |
