| 摘要 |
An electrode rod ( 1;21 ) for a pH meter, comprising a measuring end ( 2; 22 ) for immersion into a liquid test sample ( 31 ), wherein the measuring end ( 2; 22 ) has a pH measuring element, and wherein electrical feed lines ( 5 ) in the electrode rod ( 1;21 ) extend towards the pH measuring element, is characterized in that at least one capillary ( 8, 9, 10; 23 ) for feeding a liquid into the test sample ( 31 ) extends in the electrode rod ( 1; 21 ), and the at least one capillary ( 8, 9, 10; 23 ) has an outlet opening ( 11, 12, 13; 24 ) in the area of the measuring end ( 2; 22 ). The inventive electrode rod facilitates and accelerates preparation of liquid test samples, in particular, adjustment of a pH value for small amounts of test samples or narrow sample containers. |
