Physikalisch-Technische Bundesanstalt

Internationale Vergleichsmessungen

Europäische Vergleichsmessungen

EURAMET key comparison databasis

• 300 Intercomparison of definitive method for pH measurement;
  Metrologia (1996), 33:95-96
• 370 Intercomparison of primary standard measurement devices for pH.
  Metrologia (1997), 34:375-376
• 424 Intercomparison of primary standard measurement devices for pH.
  Metrologia (2000), 37:85-86
• 632 Study on electrolytic conductivity measurements
• 696 Comparison of primary measurement procedures for pH (Koordinator)
  Metrologia, 2005, 42, Tech. Suppl., 08001
• 760 pH determination of phosphate buffer by Harned cell (Koordinator)
• 843 Recommendations for the calibration and evaluation of pH on site measuring instruments
• 898 Electrolytic conductivity at pure water level
• 918 Study on the traceability of salinity measurements in seawater (Koordinator)

Internationale Schlüsselvergleiche

BIPM key comparison databasis

• CCQM-K 9:     pH measurement of phosphate buffer solutions (coordinator)
• CCQM-K9.1:   pH measurement of a phosphate buffer solution (coordinator)
• CCQM-K9.2:   pH measurement of a phosphate buffer solution (coordinator)
• CCQM-K 17:   pH measurement of phthalate buffer solutions (coordinator)
• CCQM-K18:    pH measurement of carbonate buffer solutions
• CCQM-K18.1: pH measurement of carbonate buffer solutions
• CCQM-K19:    pH measurement of borate buffer solutions (coordinator)
• CCQM-K20:    pH measurement of tetroxalate buffer solutions
• CCQM-K36.1: Measurement of electrolytic conductivity
• CCQM-K36.2: Measurement of electrolytic conductivity
• CCQM-K91:    pH measurement of phthalate buffer solutions (coordinator)
• CCQM-K92:    Measurement of electrolytic conductivity
• Die Pilotstudien http://www.bipm.org/en/committees/cc/ccqm/pilot_cc.html

Zusammenarbeit

Mitarbeit in ...

• SCOR/IAPSO WG 127 on Thermodynamics and Equation of State of Seawater
• IUPAC:WG on pH Comparable pH measurements by metrological traceability