Authors: Akiharu Hioki, Toshiaki Asakai, Igor Maksimov, Toshihiro Suzuki, Tsutomu Miura, Rosi Ketrin, null Nuryatini, Ngo Huy Thanh, Nguyen Truong Chinh, Alena Vospelova, Frank Bastkowski, Beatrice Sander, Jessica Matzke, Sergey Prokunin, Dmitry Frolov, Alexey Aprelev, Vladimir Dobrovolskiy, Emrah Uysal, Lokman Liv, Judith Velina Lara-Manzano, Jazmin Montero-Ruiz, Luis Ortiz-Aparicio, Galia Ticona Canaza, Khirul Anuar Mohd Amin, Haslina Abd Kadir, Nickolay Bakovets, Siu-Kay Wong, Wai-Hing Lam

Venue: Metrologia

Type: Publication

Abstract: The APMP.QM-K91 was organised by TCQM of APMP to test the abilities of the national metrology institutes in the APMP region to measure a pH value of a phthalate buffer. This APMP comparison on pH measurement was proposed by the National Metrology Institute of Japan at the APMP-TCQM meeting held September 22–23, 2014. After approval by TCQM, the comparison has been conducted by NMIJ. The comparison is a key comparison following CCQM-K91. The comparison material was a phthalate buffer of pH around 4.0 and the measurement temperatures were 15 °... (read more)

DOI: 10.1088/0026-1394/54/1a/08002