| 摘要 |
A compound measuring electrode incorporates a pH sensitive glass electrode 2, 3, 4, a reference electrode 7, 8 and a redox electrode 12. The assembly comprises an outer tube 5; and inner tube 1 formed inside said outer tube; a pH measuring glass film 2 which is formed at one end of said inner tube in such a manner that said glass film is exposed outside and with electrolyte 3 and electrode 4 forms the glass electrode in said inner tube; said outer tube, inner tube and glass film being integral; a reference electrode comprising electrode 7, electrolyte 6 and salt bridge 8 inserted between said inner tube and said outer tube; a glass tube 10 integral with the inside wall of said outer tube; a noble metal wire 11 built in said glass tube; and an oxidation-reduction potential measuring electrode 12 connected to said noble metal wire at one end and exposed to the outside side of said glass film at the other end. A measuring device incorporating a pH measuring amplifier, a redox potential measuring amplifier, a power source and an indicator circuit for use with the compound electrode assembly is also disclosed. <IMAGE> |
