Principles and problems of standardization in electroanalytic monitoring by direct potentiometry

A review with 15 refs. Topics covered include: standardization of the performance of the measuring instrument; standardization of the performance of the sensor; the effect of the concn. scale used; std. primary pH-meters; pIonometric stds.; incidence of cumulative errors; use of stds. in prepn. of calibration curves; pIonometric procedures related to the std. addn. method; double addn. method; detn. of redox potential; and detn. of pH.