liquid junction
Any junction between two electrolyte solutions of different composition. Across such a junction there arises a potential difference, called the liquid junction potential. In the @O04298@ the junction is between the test, or @P04661@, solution and the @F02365@ or the @B00740@ of the @R05229@.
PAC, 1985, 57, 531. (Definition of pH scales, standard reference values, measurement of pH and related terminology (Recommendations 1984)) on page 541 [Terms] [Paper]