I. Maksimov, T. Asakai, M. Ohata

National Metrology Institute of Japan (NMIJ),
National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
maksimov.igor@aist.go.jp

Al’manac of Modern Metrology № 1 (33) 2023, pages 42–48

Abstract. In the field of pH measurements, the NMIJ, as designated metrology body, provides the traceability to international pH standards for a country, disseminate the certified buffer solutions for JCSS [1] and develops new measurements technologies. In this review we would like to present the last topic with the short description of some recent studies involving the Harned cell.

Keywords: Harned cell, primary method, pH, traceability, buffer solution, calibration, electrode, uncertainty.

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