Published January 1, 2016 | Version v1
Journal article Open

Key comparison on pH of an unknown phosphate buffer

  • 1. Phys Tech Bundesanstalt, Braunschweig, Germany
  • 2. Bulgarian Inst Metrol, Sofia, Bulgaria
  • 3. Ctr Nacl Metrol, Santiago De Queretaro, Queretaro, Mexico
  • 4. Czech Metrol Inst, Brno, Czech Republic
  • 5. Danish Fundamental Metrol AS, Lyngby, Denmark
  • 6. Cent Off Measures, Warsaw, Poland
  • 7. Inst Boliviano Metrol, La Paz, Bolivia
  • 8. Inst Nacl Def Competencia & Protecc Propiedad Int, San Borja, Peru
  • 9. Natl Inst Metrol Qual & Technol, Niteroi, RJ, Brazil
  • 10. Hungarian Trade Licensing Off, Budapest, Hungary

Description

Results of CCQM-K99 key comparison on unknown phosphate buffer pH similar to 7.5 at 5 degrees C, 15 degrees C, 25 degrees C, 37 degrees C and 50 degrees C are reported. Good agreement is found between the majority of participants.

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