Electrochemical reference cell with improved liquid junction

Details Electrochemical reference cell with improved liquid junction Electrochemical reference cell with improved liquid junction

G - Physics

01

N

324/28.1

G01N 27/401 (2006.01) G01N 27/28 (2006.01) G01N 27/30 (2006.01)

Patent

CA 1110701

Inventor: T. R. Barben II Title: ELECTROCHEMICAL REFERENCE CELL WITH IMPROVED LIQUID JUNCTION ABSTRACT OF THE DISCLOSURE An electrochemical reference cell has a reference electrode disposed at one end of a rigid hollow cylinder immersed in an electrolyte solution of known concentration. Different interlocking series of plugs, consisting of a material such as wood, with semipermeable, longitudinally extending capillaries, are fitted together in abutting relation to fill the hollow interior of the cylinder between the reference cell and the other end with one series longitudinally overlapping the other. The abutting end surfaces of adjacent plugs in each series are sealed to close off the capillary path between successive plugs, whereas the outer surface of the last plug in at least one series is left unsealed to be in contact with the test solution, so that circuitious ion transfer path is established between the reference cell and the test solution that passes transversely through the longitudinal semipermeable capillary walls from the plugs in one series through adjacent plugs in the other. 1.

304506

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