CCQM-K74 was placed in the KCDB archives on 14 November 2023
MEASURAND : Amount-of-substance fraction of Nitrogen dioxide in Nitrogen
NOMINAL VALUE : 10 µmol/mol
Degrees of equivalence : offset Di and expanded uncertainty (k = 2) Ui expressed in µmol/mol
CCQM-K74 was placed in the KCDB archives on 14 November 2023
MEASURAND : Amount-of-substance fraction of Nitrogen dioxide in Nitrogen
NOMINAL VALUE : 10 µmol/mol
Degrees of equivalence : offset Di and expanded uncertainty (k = 2) Ui
expressed in µmol/mol
Results are presented under A4 printable format in Summary Results (PDF file).
| Metrology area, Sub-field | Chemistry and Biology, Gases |
| Description | Nitrogen dioxide (NO2) in Nitrogen (N2) |
| Time of measurements | 2009 - 2010 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | Amount-of-substance fraction: 10 µmol/mol |
| Transfer device | Gas cylinders |
| Comparison type | Key Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | CCQM (Consultative Committee for Amount of Substance) |
| Comments | CCQM-K74 was placed in the KCDB archives on 14 November 2023 |
| Pilot institute |
BIPM
Bureau International des Poids et Mesures BIPM - International Organization |
| Contact person | E. Flores +33 1 45 07 70 92 |
| Pilot laboratory | |
|---|---|
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| BAM |
Bundesanstalt für Materialforschung und -prüfung, Germany, EURAMET |
| CEM |
Centro Español de Metrologia, Spain, EURAMET |
| CERI |
Chemicals Evaluation and Research Institute, Japan, APMP |
| INRIM |
Istituto Nazionale di Ricerca Metrologica, Italy, EURAMET |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| LNE |
Laboratoire national de métrologie et d'essais, France, EURAMET |
| METAS |
Federal Institute of Metrology, Switzerland, EURAMET |
| MIKES-FMI |
Finnish Meteorological Institute, Finland, EURAMET |
| NIM |
National Institute of Metrology, China, APMP |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| NMIA |
National Measurement Institute, Australia, Australia, APMP |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
| VSL |
VSL, Netherlands, EURAMET |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
CCQM-K74 was placed in the KCDB archives on 14 November 2023
MEASURAND : Amount-of-substance fraction of Nitrogen dioxide in Nitrogen
NOMINAL VALUE : 10 µmol/mol
|
The key comparison reference value is the Nitrogen dioxide mole fraction assigned by the BIPM, xRi, to the cylinder measured by laboratory i, as explained in Section 5 on page 20 of the Final Report and in its Annex 2 on page 38.
|
| The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms: Di = (xi - xRi) and Ui, its expanded uncertainty (k = 2), both expressed in µmol/mol, with Ui = 2(ui2 + uRi2]1/2. |
| No pair-wise degrees of equivalence are computed for this comparison. |
CCQM-K74 was placed in the KCDB archives on 14 November 2023
MEASURAND : Amount-of-substance fraction of Nitrogen dioxide in Nitrogen
NOMINAL VALUE : 10 µmol/mol
xi : result of measurement carried out by laboratory i
ui : standard uncertainty of xi
