CCQM-K120
MEASURAND: Amount carbon dioxide in air
NOMINAL VALUE: 380 µmol/mol
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in µmol/mol
CCQM-K120 and COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 480 µmol/mol
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in µmol/mol. n COOMET.QM-K120, xR is provided from VNIIM from CCQM-K120.
Linking of COOMET.QM-K120 to CCQM-K120 has been provided by VNIIM.
CCQM-K120 and COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 800 µmol/mol
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in µmol/mol.
VNIIM provided the link between CCQM-K120 and COOMET.QM-K120.
CCQM-K120
MEASURAND: Amount carbon dioxide in air
NOMINAL VALUE: 380 µmol/mol
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in µmol/mol
Results are presented under A4 printable format in Summary Results (.PDF file).
CCQM-K120 and COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 480 µmol/mol
Degrees of equivalence represented by Di = (xI - xR,i) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in µmol/mol. n COOMET.QM-K120, xR is provided from VNIIM from CCQM-K120.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
µmol/mol |
µmol/mol |
µmol/mol |
||
GUM | 0.39 | 5.20 | ||
INRIM | 0.29 | 1.64 | ||
KRISS | 0.15 | 0.23 | ||
LNE | 0.20 | 1.01 | ||
NIM | -0.05 | 0.30 | ||
NMIJ | -0.05 | 0.20 | ||
NMISA | 0.46 | 1.61 | ||
NOAA | -0.10 | 0.28 | ||
NPL | 0.04 | 0.26 | ||
VNIIM | 0.04 | 0.18 | ||
VSL | -0.04 | 0.37 | ||
UME | -0.12 | 0.30 | ||
BFKH | 14.99 | 2.12 | ||
NIST | -0.87 | 0.45 | ||
NPLI | -0.34 | 3.04 | ||
BelGIM | 0.20 | 0.70 | ||
KazStandart | 0.02 | 2.43 | ||
NMC, A*STAR | -0.32 | 0.77 | ||
SE "Ukrmetrteststandart" | 1.91 | 0.97 | ||
VNIIM | 0.035 | 0.175 |
The linking of the COOMET.QM-K120 to CCQM-K120 has been provided by VNIIM.
CCQM-K120 and COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 800 µmol/mol
Degrees of equivalence represented by Di and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in µmol/mol.
LABi | Di | Uneg,i | Upos,i | |
---|---|---|---|---|
µmol/mol |
µmol/mol |
µmol/mol |
||
GUM | 0.40 | 8.60 | ||
INRIM | 0.51 | 2.61 | ||
KRISS | 0.28 | 0.46 | ||
LNE | 0.10 | 1.71 | ||
NIM | -0.04 | 0.24 | ||
NMIJ | -0.04 | 0.45 | ||
NMISA | 0.91 | 1.03 | ||
NOAA | 0.03 | 0.25 | ||
NPL | -0.38 | 0.71 | ||
VNIIM | -0.16 | 0.40 | ||
VSL | -0.60 | 0.70 | ||
UME | -0.53 | 0.67 | ||
BFKH | 0.02 | 2.91 | ||
NIST | -0.98 | 1.11 | ||
NPLI | 1.88 | 5.05 | ||
BelGIM | -0.54 | 1.35 | ||
KazStandart | 0.02 | 4.05 | ||
NMC, A*STAR | 0.04 | 1.1 | ||
SE "Ukrmetrteststandart" | 2.19 | 1.44 | ||
VNIIM | 0.033 | 0.253 |
The VNIIM prided the link between CCQM-K120 and COOMET.QM-K120.
Metrology area, Sub-field | Chemistry and Biology, Gases |
Description | Ambient CO2 |
Time of measurements | 2017 |
Status | Approved for equivalence |
Final Reports of the comparisons | |
Measurand | Amount of carbon dioxide in air |
Transfer device | Dedicated samples |
Comparison type | Key Comparison |
Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
Conducted by | CCQM (Consultative Committee for Amount of Substance) |
Comments | Results published on 6 December 2018 Carbon dioxide in air
|
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 |
BFKH |
Government Office of the Capital City Budapest, Hungary, EURAMET |
GUM |
Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET |
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 |
NIM |
National Institute of Metrology, China, APMP |
NIST |
National Institute of Standards and Technology, United States, SIM |
NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
NOAA/ESRL |
NOAA Earth System Research Laboratory (NOAA/ESRL), WMO - International Organization, SIM |
NPL |
National Physical Laboratory, United Kingdom, EURAMET |
NPLI |
CSIR National Physical Laboratory of India, India, APMP |
UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET |
VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
VSL |
VSL, Netherlands, EURAMET |
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CCQM-K120
MEASURAND: Amount carbon dioxide in air
NOMINAL VALUE: 380 µmol/mol
There is no single reference value for this comparison. The Key Comparison Reference Values were obtained by applying a linear regression to a consistent set of results (excluding BFKH, NIST and NPLI). The value xiref is taken as the Key Comparison Reference Value for laboratory i. |
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms, both expressed in µmol/mol: Di = (xi - xiref) and Ui, its expanded uncertainty, where Ui=(2(uLab i2 + uiref2)1/2. |
CCQM-K120 and COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 480 µmol/mol
There is no single reference value for CCQM-K120. The Key Comparison Reference Values were obtained by applying a linear regression to a consistent set of results (excluding BFKH, NIM, NIST, NOAA and NPLI). The value xiref is taken as the Key Comparison Reference Value for laboratory i.
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms, both expressed in µmol/mol:
Di = (xi - xiref) and Ui, its expanded uncertainty, where
Ui = (2(uLab i2 - uiref2)1/2.
The VNIIM provides the link between the key comparison CCQM-K120 and COOMET.QM-K120, having participated in both comparisons. The linking process is described in Section 3.4 of the COOMET.QM-K120.pdf.
CCQM-K120 and COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 800 µmol/mol
There is no single reference value for CCQM-K120. The Key Comparison Reference Values were obtained by applying a linear regression to a consistent set of results (excluding BFKH, NIM, NIST, NOAA and NPLI). The value xiref is taken as the Key Comparison Reference Value for laboratory i.
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms, both expressed in µmol/mol:
Di = (xi - xiref) and Ui, its expanded uncertainty, where
Ui = (2(uLab i2 - uiref2)1/2.
The VNIIM provides the link between the key comparison CCQM-K120 and COOMET.QM-K120, having participated in both comparisons. The linking process is described in Section 3.4 of the COOMET.QM-K120.pdf.
CCQM-K120
MEASURAND: Amount carbon dioxide in air
NOMINAL VALUE: 380 µmol/mol
xi : result of measurement carried out by laboratory i
uLab i : standard uncertainty of xi
xiref : reference value for the cylinder determined by laboratory i
uiref : combined standard uncertainty of xiref
* Re-submitted value following the decision of the the CCQM GAWG
** Uncertainties below the cutoff value of 0.095 µmol/mol
CCQM-K120 and COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 480 µmol/mol
CCQM-K120
xi : result of measurement carried out by laboratory i uLab i : standard uncertainty of xi xiref : reference value for the cylinder determined by laboratory i uiref : combined standard uncertainty of xiref |
|||
Labi | Cylinder | xi | uLabi | xiref | uiref | |
µmol/mol | µmol/mol | µmol/mol | µmol/mol | |||
GUM | D298393 | 478.1 | 2.6 | 477.706 | 0.051 | |
INRIM | D247440 | 479.3 | 0.8 | 479.007 | 0.173 | |
KRISS | D500647 | 480 | 0.1 | 479.851 | 0.052 | |
LNE | 1029047 | 477.6 | 0.5 | 477.397 | 0.061 | |
NIM | FB03744 | 489.15 | 0.11 | 489.202 | 0.099 | |
NMIJ | CPC00494 | 471.301 | 0.026** | 471.351 | 0.094 | |
NMISA | M518167 | 479.5 | 0.8 | 479.042 | 0.068 | |
NOAA | CC305198 | 479.26 | 0.13 | 479.363 | 0.058 | |
NPL | 2170 | 480.02 | 0.12 | 479.985 | 0.049 | |
VNIIM | M365664 | 480.18 | 0.065** | 480.145 | 0.059 | |
VSL | 5604880 | 480.48 | 0.18 | 480.523 | 0.045 | |
UME | PSM266468 | 480.42 | 0.125* | 480.537 | 0.078 | |
BFKH | OMH44 | 479.9 | 1.05 | 464.911 | 0.138 | |
NIST | FB04300 | 472.662 | 0.214 | 473.529 | 0.071 | |
NPLI | JJ108862 | 480.52 | 1.52 | 480.863 | 0.079 | |
* Re-submitted value following the decision of the the CCQM GAWG | ||||||
** Uncertainties below the cutoff value of 0.095 µmol/mol |
COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 480 µmol/mol
COOMET.QM-K120 | |||
Labi | xi | ui | |
µmol/mol | µmol/mol | ||
BelGIM | 482.4 | 0.3 | |
KazStandart | 486.8 | 1.2 | |
NMC, A*STAR | 479.87 | 0.34 | |
SE "Ukrmetrteststandart" | 480.3 | 0.45 | |
VNIIM | 480.18 | 0.065 |
The measurement results are listed in Appendix I of the COOMET.QM-K120 Final Report.
CCQM-K120 and COOMET.QM-K120
MEASURAND Carbon dioxide amount fraction in air
NOMINAL VALUE 800 µmol/mol
xi : result of measurement carried out by laboratory i
uLab i : standard uncertainty of xi
xiref : reference value for the cylinder determined by laboratory i
uiref : combined standard uncertainty of xiref
CCQM-K120
Labi | Cylinder | xi | uLabi | xiref | uiref | |
µmol/mol | µmol/mol | µmol/mol | µmol/mol | |||
GUM | D298402 | 800.5 | 4.3 | 800.105 | 0.106 | |
INRIM | D247445 | 798.9 | 1.3 | 798.389 | 0.128 | |
KRISS | D500672 | 800.8 | 0.2 | 800.519 | 0.118 | |
LNE | 1029048 | 802.2 | 0.85 | 802.099 | 0.078 | |
NMIJ | CPC00558 | 803.658 | 0.039** | 803.694 | 0.114 | |
NPL | 2181 | 799.7 | 0.2 | 799.744 | 0.101 | |
NMISA | M518244 | 799.1 | 0.5 | 798.187 | 0.132 | |
VNIIM | M365707 | 800.73 | 0.095 | 800.697 | 0.084 | |
VSL | 5604705 | 795.7 | 0.3 | 796.08 | 0.191 | |
UME | PSM298347 | 800.76 | 0.180* | 800.917 | 0.083 | |
NIM | FB03748 | 809.82 | 0.13 | 810.424 | 0.327 | |
NOAA | CB11668 | 794.08 | 0.24 | 794.608 | 0.237 | |
BFKH | OHM69 | 800.3 | 1.45 | 800.282 | 0.1 | |
NIST | FB04287 | 794.53 | 0.514 | 795.511 | 0.208 | |
NPLI | JJ108854 | 796.38 | 2.515 | 794.501 | 0.239 | |
* Re-submitted value following the decision of the the CCQM GAWG | ||||||
** Uncertainties below the cutoff value of 0.095 µmol/mol |
COOMET.QM-K120
Labi | xi | u(xi) | |
µmol/mol | µmol/mol | ||
BelGIM | 802.6 | 0.6 | |
KAZINMETR | 799.4 | 2 | |
NMC, A*STAR | 799.37 | 0.45 | |
Ukrmetrteststandart | 800 | 0.65 | |
VNIIM | 800.73 | 0.095 | |