CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Carbon monoxide : ~ 30 mmol/mol

Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in mmol/mol

Please click onto the graph to get an enlarged version.

Red diamonds: participants in CCQM-K3
Green triangles: participants in EUROMET.QM-K3
Blue circles: participants in APMP.QM-K3
Orange squares: participants in COOMET.QM-K3

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Carbon dioxide : ~ 135 mmol/mol

Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in mmol/mol

Please click onto the graph to get an enlarged version.

Red diamonds: participants in CCQM-K3
Green triangles: participants in EUROMET.QM-K3
Blue circles: participants in APMP.QM-K3
Orange squares: participants in COOMET.QM-K3

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Propane : ~ 2 mmol/mol

Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in mmol/mol

Please click onto the graph to get an enlarged version.

Red diamonds: participants in CCQM-K3
Green triangles: participants in EUROMET.QM-K3
Blue circles: participants in APMP.QM-K3
Orange squares: participants in COOMET.QM-K3

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Carbon monoxide : ~ 30 mmol/mol

   
Lab iDiUi
 /(mmol/mol)/(mmol/mol)
OMH-0.0180.038
BAM0.0370.162
NIST-0.0200.209
NMi-VSL-0.0280.122
NMIJ-0.0400.059
NRCCRM0.0400.109
SMU-0.2250.094
KRISS-0.0150.034
PTB0.0260.067
METAS-0.0260.074
BNM-LNE-0.2820.301
VNIIM0.2930.181
NPL0.0150.068
SMU0.0140.096
IPQ0.0270.112
CSIR-NML-0.2600.461
GUM0.0050.112
CMI-0.6524.400
NMIJ0.010.12
CMS/ITRI-0.070.05
CSIR-NML0.061.60
KRISS-0.040.06
VNIIM0.010.06
UkrCSM-0.110.12
BelGIM-0.060.20
BAM-0.040.15

In dark blue: laboratories participant in CCQM-K3
In green: laboratories participant in EUROMET.QM-K3 (indicated as * in "Lab j" list)
In blue: laboratories participant in APMP.QM-K3
In orange: laboratories participant in COOMET.QM-K3

Additional data: pair-wise degrees of equivalence inside APMP.QM-K3 and COOMET.QM-K3:

All results, including relative degrees of equivalence for COOMET participants, are presented under A4 printable format in Summary Results (.PDF file).

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Carbon dioxide : ~ 135 mmol/mol

   
Lab iDiUi
 /(mmol/mol)/(mmol/mol)
OMH0.150.14
BAM0.010.70
NIST0.170.24
NMi-VSL0.020.23
NMIJ0.010.13
NRCCRM0.060.47
SMU0.710.56
KRISS-0.020.09
PTB0.300.18
METAS-0.080.31
BNM-LNE0.280.41
VNIIM-0.050.51
NPL-0.080.28
SMU0.030.26
IMGC-0.325.10
IPQ0.080.47
CSIR-NML0.324.34
GUM0.210.14
NMIJ0.060.25
CMS/ITRI-0.070.16
CSIR-NML0.253.60
KRISS-0.050.18
VNIIM0.120.13
UkrCSM-0.140.22
BelGIM0.861.00
BAM0.090.41

In dark blue: laboratories participant in CCQM-K3
In green: laboratories participant in EUROMET.QM-K3 (indicated as * in "Lab j" list)
In blue: laboratories participant in APMP.QM-K3
In orange: laboratories participant in COOMET.QM-K3

Additional data: pair-wise degrees of equivalence inside APMP.QM-K3 and COOMET.QM-K3:

All results, including relative degrees of equivalence for COOMET participants, are presented under A4 printable format in Summary Results (.PDF file).

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Propane : ~ 2 mmol/mol

   
Lab iDiUi
 /(mmol/mol)/(mmol/mol)
OMH-0.00060.0034
BAM0.00910.0103
NIST0.00060.0139
NMi-VSL0.00000.0040
NMIJ0.00000.0030
NRCCRM-0.00300.0071
SMU0.00220.0301
KRISS0.00130.0032
PTB-0.00780.0132
METAS-0.01590.0055
BNM-LNE-0.00300.0046
VNIIM-0.00770.0083
NPL0.00500.0066
SMU0.00440.0113
IMGC-0.07400.0720
IPQ0.00020.0055
GUM-0.00060.0066
CMI0.12190.1500
NMIJ-0.00260.0037
CMS/ITRI-0.01150.0171
KRISS0.00210.0045
VNIIM0.0010.004
UkrCSM-0.0010.004
BelGIM-0.0040.020
BAM0.0100.012

In dark blue: laboratories participant in CCQM-K3
In green: laboratories participant in EUROMET.QM-K3 (indicated as * in "Lab j" list)
In blue: laboratories participant in APMP.QM-K3
In orange: laboratories participant in COOMET.QM-K3

Additional data: pair-wise degrees of equivalence inside APMP.QM-K3 and COOMET.QM-K3:

All results, including relative degrees of equivalence for COOMET participants, are presented under A4 printable format in Summary Results (.PDF file).

Comparison
Comparison close
CC comparison
Linked comparison
COOMET.QM-K3
Metrology area, Sub-field Chemistry and Biology, Gases
Description Automotive emission gases
Time of measurements 2005
Status Approved for equivalence
Final Reports of the comparisons
Measurand Amount-of-substance fraction of CO (30 mmol/mol), CO2 (135 mmol/mol) and C3H8 (2 mmol/mol); N2 balance
Transfer device Gas mixtures in cylinders
Comparison type Key Comparison
Consultative Committee CCQM (Consultative Committee for Amount of Substance)
Conducted by COOMET (Euro-Asian Cooperation of National Metrological Institutions)
RMO Internal Identifier COOMET 312/Ru/04
Comments

EUROMET.QM-K3APMP.QM-K3 and COOMET.QM-K3 results are linked to those of CCQM-K3.

Dates of publication:

  • CCQM-K3 results, 21 November 2001;
  • EUROMET.QM-K3 results, 05 July 2002;
  • APMP.QM-K3 results, 14 November 2003;
  • COOMET.QM-K3 results, 31 August 2006.

Automotive emission gases.

Pilot institute VNIIM
D.I. Mendeleyev Institute for Metrology, Rosstandart
Russian Federation
Contact person Leonid Konopelko

+7 812 315 11 45
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
VNIIM

D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET

BAM

Bundesanstalt für Materialforschung und -prüfung, Germany, EURAMET

BelGIM

Belarussian State Institute for Metrology, Belarus, COOMET

UkrCSM

Ukrmetrteststandard, Ukraine, EURAMET

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Carbon monoxide : 32 mmol/mol for CCQM-K3 and EUROMET.QM-K3, 28 mmol/mol for APMP.QM-K3, and 30 mmol/mol for COOMET.QM-K3

  • Key comparison CCQM-K3

Key comparison reference value: there is no single key comparison reference value for this comparison, the value xigrav is taken as the reference value for laboratory i.

The degree of equivalence of each laboratory i with respect to the reference value is given by a pair of terms: Di = (xi - xigrav) and Ui, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui = 2(ui2 + uigravR2)1/2.

The degree of equivalence between two laboratories i and j is given by a pair of terms:
Dij =(Di - Dj) = (xi - xigrav) - (xj - xjgrav) and Uij, its expanded uncertainty (k = 2), both expressed in mmol/mol, Uij = 2(ui2 + uj2 + uigrav2 + ujgrav2)1/2.
  • Key comparison EUROMET.QM-K3

The gravimetric value xigrav-EUR is taken as the reference value for laboratory i participant in EUROMET.QM-K3.

The degree of equivalence of laboratory i participant in EUROMET.QM-K3 with respect to the reference value is given by a pair of terms:
Di-EUR = (xi-EUR - xigrav-EUR) and Ui-EUR, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-EUR = 2(ui-EUR2 + uigravR-EUR2)1/2.
  • Key comparison APMP.QM-K3

The gravimetric value xigrav-APMP is taken as the reference value for laboratory i participant in APMP.QM-K3.

The degree of equivalence of laboratory i participant in APMP.QM-K3 with respect to the reference value is given by a pair of terms:
Di-APMP = (xi-APMP - xigrav-APMP) and Ui-APMP, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-APMP = 2(ui-APMP2 + uigravR-APMP2)1/2.
  • Key comparison COOMET.QM-K3

The gravimetric value xigrav-COO is taken as the reference value for laboratory i participant in COOMET.QM-K3.

The degree of equivalence of laboratory i participant in COOMET.QM-K3 with respect to the reference value is given by a pair of terms:
Di-COO = (xi-COO - xigrav-COO) and Ui-COO, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-COO = (ULab i-COO2 + UigravR-COO2)1/2 (since uncertainties are all expanded with k = 2). Relative values, expressed in %, are also calculated.
  • Linking EUROMET.QM-K3, APMP.QM-K3, and COOMET.QM-K3 to CCQM-K3

The regional QM-K3 key comparisons are linked to CCQM-K3 through the gravimetric values.

It follows that:

The degrees of equivalence with respect to the reference value obtained in the regional QM-K3 key comparisons are transferred to CCQM-K3 without correction:
Di = Di-RMO and Ui = Ui-RMO, with "RMO" = "EUR" or "APMP" or "COO" according to the case.

The degree of equivalence between two laboratories i and j, one and the other participant in any one of the four comparisons, is given by a pair of terms:
Dij =(Di - Dj) and Uij, its expanded uncertainty (k = 2), both expressed in mmol/mol, Uij = 2(ui2 + uj2 + uigrav2 + ujgrav2)1/2, with indexes "-EUR", "R-APMP", and
"R-COO" when necessary.


These statements make it possible to extend the CCQM-K3 matrices of equivalence to participants in the regional QM-K3 key comparisons.
In the following, not all pair-wise degrees of equivalence are explicitely computed.

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Carbon dioxide : 135 mmol/mol for CCQM-K3, EUROMET.QM-K3 and COOMET.QM-K3, and 124 mmol/mol for APMP.QM-K3

  • Key comparison CCQM-K3

Key comparison reference value: there is no single key comparison reference value for this comparison, the value xigrav is taken as the reference value for laboratory i.

The degree of equivalence of each laboratory i with respect to the reference value is given by a pair of terms: Di = (xi - xigrav) and Ui, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui = 2(ui2 + uigravR2)1/2.

The degree of equivalence between two laboratories i and j is given by a pair of terms:
Dij =(Di - Dj) = (xi - xigrav) - (xj - xjgrav) and Uij, its expanded uncertainty (k = 2), both expressed in mmol/mol, Uij = 2(ui2 + uj2 + uigrav2 + ujgrav2)1/2.
  • Key comparison EUROMET.QM-K3

The gravimetric value xigrav-EUR is taken as the reference value for laboratory i participant in EUROMET.QM-K3.

The degree of equivalence of laboratory i participant in EUROMET.QM-K3 with respect to the reference value is given by a pair of terms:
Di-EUR = (xi-EUR - xigrav-EUR) and Ui-EUR, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-EUR = 2(ui-EUR2 + uigravR-EUR2)1/2.
  • Key comparison APMP.QM-K3

The gravimetric value xigrav-APMP is taken as the reference value for laboratory i participant in APMP.QM-K3.

The degree of equivalence of laboratory i participant in APMP.QM-K3 with respect to the reference value is given by a pair of terms:
Di-APMP = (xi-APMP - xigrav-APMP) and Ui-APMP, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-APMP = 2(ui-APMP2 + uigravR-APMP2)1/2.
  • Key comparison COOMET.QM-K3

The gravimetric value xigrav-COO is taken as the reference value for laboratory i participant in COOMET.QM-K3.

The degree of equivalence of laboratory i participant in COOMET.QM-K3 with respect to the reference value is given by a pair of terms:
Di-COO = (xi-COO - xigrav-COO) and Ui-COO, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-COO = (ULab i-COO2 + UigravR-COO2)1/2 (since uncertainties are all expanded with k = 2). Relative values, expressed in %, are also calculated.
  • Linking EUROMET.QM-K3, APMP.QM-K3, and COOMET.QM-K3 to CCQM-K3

The regional QM-K3 key comparisons are linked to CCQM-K3 through the gravimetric values.

It follows that:

The degrees of equivalence with respect to the reference value obtained in the regional QM-K3 key comparisons are transferred to CCQM-K3 without correction:
Di = Di-RMO and Ui = Ui-RMO, with "RMO" = "EUR" or "APMP" or "COO" according to the case.

The degree of equivalence between two laboratories i and j, one and the other participant in any one of the four comparisons, is given by a pair of terms:
Dij =(Di - Dj) and Uij, its expanded uncertainty (k = 2), both expressed in mmol/mol, Uij = 2(ui2 + uj2 + uigrav2 + ujgrav2)1/2, with indexes "-EUR", "R-APMP", and
"R-COO" when necessary.


These statements make it possible to extend the CCQM-K3 matrices of equivalence to participants in the regional QM-K3 key comparisons.
In the following, not all pair-wise degrees of equivalence are explicitely computed.

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

NOMINAL VALUES for Propane : 2.05 mmol/mol for CCQM-K3 and EUROMET.QM-K3, 1.95 mmol/mol for APMP.QM-K3, and 2 mmol/mol for COOMET.QM-K3

  • Key comparison CCQM-K3

Key comparison reference value: there is no single key comparison reference value for this comparison, the value xigrav is taken as the reference value for laboratory i.

The degree of equivalence of each laboratory i with respect to the reference value is given by a pair of terms: Di = (xi - xigrav) and Ui, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui = 2(ui2 + uigravR2)1/2.

The degree of equivalence between two laboratories i and j is given by a pair of terms:
Dij =(Di - Dj) = (xi - xigrav) - (xj - xjgrav) and Uij, its expanded uncertainty (k = 2), both expressed in mmol/mol, Uij = 2(ui2 + uj2 + uigrav2 + ujgrav2)1/2.
  • Key comparison EUROMET.QM-K3

The gravimetric value xigrav-EUR is taken as the reference value for laboratory i participant in EUROMET.QM-K3.

The degree of equivalence of laboratory i participant in EUROMET.QM-K3 with respect to the reference value is given by a pair of terms:
Di-EUR = (xi-EUR - xigrav-EUR) and Ui-EUR, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-EUR = 2(ui-EUR2 + uigravR-EUR2)1/2.
  • Key comparison APMP.QM-K3

The gravimetric value xigrav-APMP is taken as the reference value for laboratory i participant in APMP.QM-K3.

The degree of equivalence of laboratory i participant in APMP.QM-K3 with respect to the reference value is given by a pair of terms:
Di-APMP = (xi-APMP - xigrav-APMP) and Ui-APMP, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-APMP = 2(ui-APMP2 + uigravR-APMP2)1/2.
  • Key comparison COOMET.QM-K3

The gravimetric value xigrav-COO is taken as the reference value for laboratory i participant in COOMET.QM-K3.

The degree of equivalence of laboratory i participant in COOMET.QM-K3 with respect to the reference value is given by a pair of terms:
Di-COO = (xi-COO - xigrav-COO) and Ui-COO, its expanded uncertainty (k = 2), both expressed in mmol/mol, Ui-COO = (ULab i-COO2 + UigravR-COO2)1/2 (since uncertainties are all expanded with k = 2). Relative values, expressed in %, are also calculated.
  • Linking EUROMET.QM-K3, APMP.QM-K3, and COOMET.QM-K3 to CCQM-K3

The regional QM-K3 key comparisons are linked to CCQM-K3 through the gravimetric values.

It follows that:

The degrees of equivalence with respect to the reference value obtained in the regional QM-K3 key comparisons are transferred to CCQM-K3 without correction:
Di = Di-RMO and Ui = Ui-RMO, with "RMO" = "EUR" or "APMP" or "COO" according to the case.

The degree of equivalence between two laboratories i and j, one and the other participant in any one of the four comparisons, is given by a pair of terms:
Dij =(Di - Dj) and Uij, its expanded uncertainty (k = 2), both expressed in mmol/mol, Uij = 2(ui2 + uj2 + uigrav2 + ujgrav2)1/2, with indexes "-EUR", "R-APMP", and
"R-COO" when necessary.


These statements make it possible to extend the CCQM-K3 matrices of equivalence to participants in the regional QM-K3 key comparisons.
In the following, not all pair-wise degrees of equivalence are explicitely computed.

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

  • Key comparison CCQM-K3

NOMINAL VALUES :

Carbon monoxide

32 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2.05 mmol/mol

Nitrogen

Balance

xi : result of measurement carried out by laboratory i
ui : combined standard uncertainty of xi
xigrav : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR : combined standard uncertainty of xigrav
uigravR = (uigrav2 + uiver2)1/2, where uigrav and uiver are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value, with
uigrav = 0.0002 . xigrav and uiver = 0.0003 . xigrav, both in mmol/mol, for Carbon monoxide,
uigrav = 0.00003 . xigrav and uiver = 0.0003 . xigrav, both in mmol/mol, for Carbon dioxide, and
uigrav = 0.00012 . xigrav and uiver = 0.00056 . xigrav, both in mmol/mol, for Propane.

  • Key comparison EUROMET.QM-K3

NOMINAL VALUES :

Carbon monoxide

32 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2.05 mmol/mol

Nitrogen

Balance

xi-EUR : result of measurement carried out by laboratory i
ui-EUR : combined standard uncertainty of xi-EUR
xigrav-EUR : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR-EUR : combined standard uncertainty of xigrav-EUR

u igravR-EUR = (uigrav-EUR2 + uiver-EUR2)1/2, where uigrav-EUR and uiver-EUR are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value, with
uigrav-EUR = 0.0002 . xigrav-EUR and uiver-EUR = 0.0003 . xigrav-EUR , both in mmol/mol, for Carbon monoxide,
uigrav-EUR = 0.00003 . xigrav-EUR and uiver-EUR = 0.0003 . xigrav-EUR , both in mmol/mol, for Carbon dioxide, and
uigrav-EUR = 0.00012 . xigrav-EUR and uiver-EUR = 0.00056 . xigrav-EUR , both in mmol/mol, for Propane.

  • Key comparison APMP.QM-K3

NOMINAL VALUES :

Carbon monoxide

28 mmol/mol

Carbon dioxide

124 mmol/mol

Propane

1.95 mmol/mol

Nitrogen

Balance

xi-APMP : result of measurement carried out by laboratory i
ui-APMP : combined standard uncertainty of xi-APMP
xigrav-APMP : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR-APMP : combined standard uncertainty of xigrav-APMP

uigravR-APMP = (uigrav-APMP2 + uiver-APMP2)1/2, where uigrav-APMP and
uiver-APMP are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value.
The relative expanded uncertainty (k=2) linked to the verification process is estimated to be equal to 0.10%.

  • Key comparison COOMET.QM-K3

NOMINAL VALUES :

Carbon monoxide

30 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2 mmol/mol

Nitrogen

Balance

xi-COO : result of measurement carried out by laboratory i
ULab i-COO : expanded uncertainty (k = 2) of xi-COO
xigrav-COO : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
UigravR-COO : expanded uncertainty (k = 2) of xigrav-COO

UigravR-COO / 2 = (uigrav-COO2 + uiver-COO2)1/2, where uigrav-COO and
uiver-COO are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value.

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

  • Key comparison CCQM-K3

NOMINAL VALUES :

Carbon monoxide

32 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2.05 mmol/mol

Nitrogen

Balance

xi : result of measurement carried out by laboratory i
ui : combined standard uncertainty of xi
xigrav : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR : combined standard uncertainty of xigrav
uigravR = (uigrav2 + uiver2)1/2, where uigrav and uiver are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value, with
uigrav = 0.0002 . xigrav and uiver = 0.0003 . xigrav, both in mmol/mol, for Carbon monoxide,
uigrav = 0.00003 . xigrav and uiver = 0.0003 . xigrav, both in mmol/mol, for Carbon dioxide, and
uigrav = 0.00012 . xigrav and uiver = 0.00056 . xigrav, both in mmol/mol, for Propane.

  • Key comparison EUROMET.QM-K3

NOMINAL VALUES :

Carbon monoxide

32 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2.05 mmol/mol

Nitrogen

Balance

xi-EUR : result of measurement carried out by laboratory i
ui-EUR : combined standard uncertainty of xi-EUR
xigrav-EUR : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR-EUR : combined standard uncertainty of xigrav-EUR

u igravR-EUR = (uigrav-EUR2 + uiver-EUR2)1/2, where uigrav-EUR and uiver-EUR are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value, with
uigrav-EUR = 0.0002 . xigrav-EUR and uiver-EUR = 0.0003 . xigrav-EUR , both in mmol/mol, for Carbon monoxide,
uigrav-EUR = 0.00003 . xigrav-EUR and uiver-EUR = 0.0003 . xigrav-EUR , both in mmol/mol, for Carbon dioxide, and
uigrav-EUR = 0.00012 . xigrav-EUR and uiver-EUR = 0.00056 . xigrav-EUR , both in mmol/mol, for Propane.

  • Key comparison APMP.QM-K3

NOMINAL VALUES :

Carbon monoxide

28 mmol/mol

Carbon dioxide

124 mmol/mol

Propane

1.95 mmol/mol

Nitrogen

Balance

xi-APMP : result of measurement carried out by laboratory i
ui-APMP : combined standard uncertainty of xi-APMP
xigrav-APMP : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR-APMP : combined standard uncertainty of xigrav-APMP

uigravR-APMP = (uigrav-APMP2 + uiver-APMP2)1/2, where uigrav-APMP and
uiver-APMP are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value.
The relative expanded uncertainty (k=2) linked to the verification process is estimated to be equal to 0.10%.

  • Key comparison COOMET.QM-K3

NOMINAL VALUES :

Carbon monoxide

30 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2 mmol/mol

Nitrogen

Balance

xi-COO : result of measurement carried out by laboratory i
ULab i-COO : expanded uncertainty (k = 2) of xi-COO
xigrav-COO : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
UigravR-COO : expanded uncertainty (k = 2) of xigrav-COO

UigravR-COO / 2 = (uigrav-COO2 + uiver-COO2)1/2, where uigrav-COO and
uiver-COO are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value.

CCQM-K3, EUROMET.QM-K3, APMP.QM-K3 and COOMET.QM-K3

MEASURAND : Amount-of-substance fraction of automotive emission gases

  • Key comparison CCQM-K3

NOMINAL VALUES :

Carbon monoxide

32 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2.05 mmol/mol

Nitrogen

Balance

xi : result of measurement carried out by laboratory i
ui : combined standard uncertainty of xi
xigrav : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR : combined standard uncertainty of xigrav
uigravR = (uigrav2 + uiver2)1/2, where uigrav and uiver are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value, with
uigrav = 0.0002 . xigrav and uiver = 0.0003 . xigrav, both in mmol/mol, for Carbon monoxide,
uigrav = 0.00003 . xigrav and uiver = 0.0003 . xigrav, both in mmol/mol, for Carbon dioxide, and
uigrav = 0.00012 . xigrav and uiver = 0.00056 . xigrav, both in mmol/mol, for Propane.

  • Key comparison EUROMET.QM-K3

NOMINAL VALUES :

Carbon monoxide

32 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2.05 mmol/mol

Nitrogen

Balance

xi-EUR : result of measurement carried out by laboratory i
ui-EUR : combined standard uncertainty of xi-EUR
xigrav-EUR : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR-EUR : combined standard uncertainty of xigrav-EUR

u igravR-EUR = (uigrav-EUR2 + uiver-EUR2)1/2, where uigrav-EUR and uiver-EUR are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value, with
uigrav-EUR = 0.0002 . xigrav-EUR and uiver-EUR = 0.0003 . xigrav-EUR , both in mmol/mol, for Carbon monoxide,
uigrav-EUR = 0.00003 . xigrav-EUR and uiver-EUR = 0.0003 . xigrav-EUR , both in mmol/mol, for Carbon dioxide, and
uigrav-EUR = 0.00012 . xigrav-EUR and uiver-EUR = 0.00056 . xigrav-EUR , both in mmol/mol, for Propane.

  • Key comparison APMP.QM-K3

NOMINAL VALUES :

Carbon monoxide

28 mmol/mol

Carbon dioxide

124 mmol/mol

Propane

1.95 mmol/mol

Nitrogen

Balance

xi-APMP : result of measurement carried out by laboratory i
ui-APMP : combined standard uncertainty of xi-APMP
xigrav-APMP : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
uigravR-APMP : combined standard uncertainty of xigrav-APMP

uigravR-APMP = (uigrav-APMP2 + uiver-APMP2)1/2, where uigrav-APMP and
uiver-APMP are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value.
The relative expanded uncertainty (k=2) linked to the verification process is estimated to be equal to 0.10%.

  • Key comparison COOMET.QM-K3

NOMINAL VALUES :

Carbon monoxide

30 mmol/mol

Carbon dioxide

135 mmol/mol

Propane

2 mmol/mol

Nitrogen

Balance

xi-COO : result of measurement carried out by laboratory i
ULab i-COO : expanded uncertainty (k = 2) of xi-COO
xigrav-COO : gravimetric value of the gas amount-of-substance fraction in the cylinder received by laboratory i
UigravR-COO : expanded uncertainty (k = 2) of xigrav-COO

UigravR-COO / 2 = (uigrav-COO2 + uiver-COO2)1/2, where uigrav-COO and
uiver-COO are respectively the combined standard uncertainties of the gravimetric production process and of the analytical verification of the gravimetric value.