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CCQM-K91.2022
Metrology area, Sub-field Chemistry and Biology, Electrochemistry
Description Acidity function of an unknown phthalate buffer at zero chloride molality
Time of measurements 2022
Status Planned
Measurand Acidity function at at zero chloride molality, pa0 (pH)
Nominal value of pH ~4.01 at temperature 25 °C
Parameters Temperature: 15 °C, 25 °C and 37 °C, and optional at 5 °C and 50 °C
Transfer device Aqueous phthalate buffer
Comparison type Key Comparison
Consultative Committee CCQM (Consultative Committee for Amount of Substance)
Conducted by CCQM (Consultative Committee for Amount of Substance)
Pilot institute PTB
Physikalisch-Technische Bundesanstalt
Germany
Contact person Frank Bastkowski

First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
PTB

Physikalisch-Technische Bundesanstalt, Germany, EURAMET

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