Equipment and calibration method
Comparative study of three approaches of measurements uncertainties evaluation GUM, GUM S1 and GLOBALE
Article REF: R286 V1
Equipment and calibration method
Comparative study of three approaches of measurements uncertainties evaluation GUM, GUM S1 and GLOBALE

Authors : Abdelali MOHAMMADI, Youssef EL HACHIMI, Samira MARICHANE, Abdallah MOUAD

Publication date: June 10, 2019 | Lire en français

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1. Equipment and calibration method

1.1 pH meter

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1.1.1 pH meter components

The pH meter comprises a probe with two electrodes, one a standard electrode with a constant, known potential (known as the "reference electrode"), the other a variable potential electrode (a function of pH, known as the "glass electrode").

Its operation is based on the relationship that exists between the concentration of H 3 O + ions and the electrochemical potential...

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