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Combined Measurement Uncertainty for pH-Values Using Certified Reference Materials in Potentiometric Measurements with Glass Electrodes

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Reference Materials in Measurement and Technology (RMMT 2018)

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Abstract

The practical realisation of pH-measurements with Harned-cell type equipment used for the measurement of primary standards as recommended by IUPAC is shortly outlined. In contrast to the Harned-cell without transference, the glass electrode with a junction is preferred and more practical for field laboratories. The combined measurement uncertainty is evaluated step by step in a systematic way according to ISO-GUM for a sample pH-value measured using a glass type electrode system, that was calibrated with two certified pH-reference material solutions.

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Author information

Authors and Affiliations

  1. atomolmetrion GmbH, Chemin de la Binna 10, 1786, Sugiez, Switzerland

    Samuel Wunderli

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  1. Samuel Wunderli
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Correspondence to Samuel Wunderli .

Editor information

Editors and Affiliations

  1. Ural Scientific Research Institute for Metrology, Ekaterinburg, Russia

    Sergei V. Medvedevskikh

  2. Ural Scientific Research Institute for Metrology, Ekaterinburg, Russia

    Olga N. Kremleva

  3. A.P. Vinogradov Institute of Geochemistry Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia

    Irina E. Vasil’eva

  4. Ural Scientific Research Institute for Metrology, Ekaterinburg, Russia

    Egor P. Sobina

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Wunderli, S. (2020). Combined Measurement Uncertainty for pH-Values Using Certified Reference Materials in Potentiometric Measurements with Glass Electrodes. In: Medvedevskikh, S., Kremleva, O., Vasil’eva, I., Sobina, E. (eds) Reference Materials in Measurement and Technology. RMMT 2018. Springer, Cham. https://doi.org/10.1007/978-3-030-32534-3_23

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