| 摘要 |
PROBLEM TO BE SOLVED: To provide a residual chlorine sensor simple in constitution, easy in measuring operation and low in cost. SOLUTION: A hydrophilic diaphragm 3 is provided to the leading end part of a cylindrical body 1 under tension and the cylindrical body 1 is filled with a comparison electrode internal soln. 5 consisting of KI and an acidic buffer and a comparison electrode inner pole 6 composed of Ag/AgI is immersed in the comparison electrode internal soln. 5 to be held so as to provide a predetermined interval from the diaphragm 3 while a measuring electrode 7 composed of Ag/AgI is insulated from the comparison electrode internal soln. 5 to be brought into contact with the inner surface of the diaphragm 3. |
