| 摘要 |
A reference electrode for use with a measuring electrode (10) for measuring ion activity in a sample solution, said reference electrode comprising: an electrode chamber (22) for holding electrolyte (45) in complete isolation from the sample solution, and an electrode element (46) in said electrode chamber, wherein at least a portion of one of the walls (21) which define said chamber (22) is formed of wall material comprising an immobilised non-porous polymer having one or more salts of potassium, sodium and/or lithium mixed through at least one region (53) of said wall material before curing of the polymer to render said region (53) of the wall material electrically conductive, said wall (21) providing a physical barrier between the electrolyte and the sample solution but permitting electrical communication between them. The conductive wall material may be in tubular or block form. |
