Petra Spitzer et al 2005 Metrologia 42 08001 doi:10.1088/0026-1394/42/1A/08001
Petra Spitzer1, Philippe Charlet2, Ralf Eberhard1, Oleg V Karpov3, Rachel Philippe2, Cedric Rivier2, Igor Maximov3 and Uwe Sudmeier1
Show affiliationsThe EUROMET project 696, a trilateral comparison between PTB, Germany, LNE, France and VNIIFTRI, Russia was performed in order to demonstrate and document the capability of the participants to measure the pH of a phthalate buffer by the primary measurement procedure for pH. Good agreement of the reported results was observed. The sample was very similar to the one used in the comparison CCQM-K17. PTB acts as pilot laboratory in CCQM-K17 and in EUROMET 696. This comparison allows one to link the results obtained by LNE to the CCQM-K17 key comparison through the degree of equivalence of PTB. On the other hand, the discrepancy between measured pH values at the VNIIFTRI and PTB for the same type of buffer solution decreased, as compared with a bilateral comparison in 1997.
Main text. To reach the main text of this paper, click on Final Report.
The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the Mutual Recognition Arrangement (MRA).
Issue 1A ( 1 January 2005)
Petra Spitzer et al 2005 Metrologia 42 08001
Jacques Morel and Antti Lamminpää 2007 Metrologia 44 02003
Simone Alioli et al JHEP07(2008)060
Peter P Vasil'ev 2009 Rep. Prog. Phys. 72 076501
G Marullo Reedtz and R Cerri 2003 Metrologia 40 01001
Luigi Cantini 2008 J. Phys. A: Math. Theor. 41 095001
Iosif Bena et al JHEP11(2009)089
G Ratel et al 2005 Metrologia 42 06007
M Wollenhaupt et al 2007 J. Phys.: Conf. Ser. 88 012053
Wei Chen et al JHEP04(2006)008