PURPOSE: To simplify the structure of the titled electrode, by using the meshing part of a member forming a piercing hole for introducing a specimen solution as the liquid communication part having the electrical connection of the specimen solution and the electrolyte solution sealed in a reference electrode.
CONSTITUTION: A specimen flowing passage 9 is formed of a glass tube 3, of which the outer periphery is formed into a tapered shape and the surface is roughened, and a glass tube 4, of which the inside is formed into a tapered shape so as to be matched with the outside of said glass tube 3, and polyvinyl chloride cylinders 5, 6 are combined so as to hold both tubes 3, 4. Further, a silver electrode 1, of which the surface is coated with silver chloride 2, is inserted in a part 7 filled with a KCl solution and brought into contacted with the specimen in the flow passage 9 at constant electric resistance through a liquid communication part 8. By this method, potential can be kept always stably even if the concn. of the ion in the specimen is varied.
SUGANO KENICHI
KATAYAMA TETSUYA
