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Results of pilot comparisons of national standards for the activity of hydrogen ions in aqueous solutions
S. V. Prokunin,
A. N. Shchipunov,
D. A. Vengina,
F. Bastkowskiy,
E. Uysal,
S. Mkrtichyan,
B. K. Zhanasbaeva,
A. Beskupskiy,
O. B. Tabullo,
E. A. Zolotorevich,
A. V. Petrenko https://doi.org/10.32446/0368-1025it.2021-1-66-72
Abstract
hydrogen index one of the most important methods for monitoring aqueous media. In 2013, work was carried out to enter into the State Register of Measuring Instruments of the Russian Federation a buffer solution and a standard titer with a pH value of 7.00 – a working pH standard of the 2nd category, which is one of the most demanded of non-standard solutions for verification and calibration pH measuring instruments. To confirm the metrological characteristics, pilot comparisons were organized within COOMET. This article presents the results of a pilot comparison to determine the pH of a phosphate buffer solution – a working standard of 8 metrological institutes and 10 metrological organizations took part in the comparisons. The results obtained showed that the overwhelming majority of the participants in the comparisons presented the results of pH measurements, which have an uncertainty not exceeding ±0.03 of the average value, which is an acceptable criterion for measuring the pH.
Keywords
About the Authors
S. V. Prokunin
Russian Metrological Institute of Technical Physics and Radio Engineering (VNIIFTRI)
Russian Federation
Russian Federation
Sergey V. Prokunin
Mendeleevo, Moscow Region
A. N. Shchipunov
Russian Metrological Institute of Technical Physics and Radio Engineering (VNIIFTRI)
Russian Federation
Russian Federation
Andrey N. Shchipunov
Mendeleevo, Moscow Region
D. A. Vengina
Russian Metrological Institute of Technical Physics and Radio Engineering (VNIIFTRI)
Russian Federation
Russian Federation
Daria A. Vengina
Mendeleevo, Moscow Region
F. Bastkowskiy
Physikalisch-Technische Bundesanstalt (PTB)
Germany
Germany
Frank Bastkowskiy
Braunschweig
E. Uysal
TÜBITAK UME National Metrology Institute (TÜBITAK UME)
Turkey
Turkey
Emrah Uysal
Gebze, Kocaeli
S. Mkrtichyan
Institute of Metrology within Georgian National Agency for Standards and Metrology (GeoSTM)
Georgia
Georgia
Samvel Mkrtichyan
Tbilisi
B. K. Zhanasbaeva
Kazakhstan Institute of Metrology (KazInMetr)
Kazakhstan
Kazakhstan
Bibinur K. Zhanasbaeva
Astana
A. Beskupskiy
National Institute of Metrology (INM)
Moldova, Republic of
Moldova, Republic of
Anatoly Beskupskiy
Chisinau
O. B. Tabullo
Center for Standardization and Metrology under the Ministry of Economy of the Kyrgyz Republic (KYRGYZSTANDART)
Kyrgyzstan
Kyrgyzstan
Olga B. Tabullo
Bishkek
E. A. Zolotorevich
Belarusian state Institute of Metrology
Belarus
Belarus
Elena A. Zolotorevich
Minsk
A. V. Petrenko
All-Ukrainian State Scientific-Production Center of Standardization, Metrology,
Certification and Protection of Consumer Rights
Ukraine
Ukraine
Anton V. Petrenko
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Review
For citations:
Prokunin S.V., Shchipunov A.N., Vengina D.A., Bastkowskiy F., Uysal E., Mkrtichyan S., Zhanasbaeva B.K., Beskupskiy A., Tabullo O.B., Zolotorevich E.A., Petrenko A.V. Results of pilot comparisons of national standards for the activity of hydrogen ions in aqueous solutions. Izmeritel`naya Tekhnika. 2021;(1):66-72. (In Russ.) https://doi.org/10.32446/0368-1025it.2021-1-66-72
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