Final report on CCQM-K91: Key comparison on pH of an unknown phthalate buffer

Authors :: Petra Spitzer
F Ficicioglu
T. Nongluck
Zsófia Nagyné Szilágyi
Toshiaki Asakai
Vladimir Gavrilkin
Frank Bastkowski
P T Jakobsen
Kenneth W. Pratt
L Vyskocil
Anna Mathiasová
Fabiano Barbieri Gonzaga
Daniela Stoica
A Reyes
Igor Maksimov
G T Canaza
Beatrice Adel
Lyudmila Dimitrova
Viatcheslav Kutovoy
Monika Pawlina
Paola Fisicaro
Marcela Monroy
Wladyslaw Kozlowski
Source :: Metrologia. 50:08016-08016
Publication Year :: 2013
Publisher :: IOP Publishing, 2013.
Abstract: Results of the CCQM-K91 key comparison on pH of an unknown phthalate buffer with a nominal pH value of pH ~ 4.01 at 25 ?C are reported. Measurements are performed at 15 ?C, 25 ?C and 37 ?C and optional also at 5 ?C and 50 ?C. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).