CCQM-K160
MEASURAND Mass fraction of Platinum in autocatalyst
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
* UPTB was estimated after summing in quadrature the participant's reported uncertainty value and the dark uncertainty (tau) associated with the key comparison reference value (KCRV) because estimation using the reported uncertainty value alone results in nonequivalence with the KCRV.
CCQM-K160
MEASURAND Mass fraction of Palladium in autocatalyst
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
* UVNIIM and UNMISA were estimated after summing in quadrature the participant's reported uncertainty value and the dark uncertainty (tau) associated with the key comparison reference value (KCRV) because estimation using the reported uncertainty value alone results in nonequivalence with the KCRV.
CCQM-K160
MEASURAND Mass fraction of Rhodium in autocatalyst
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
* UNIM was estimated after summing in quadrature the participant's reported uncertainty value and the dark uncertainty (tau) associated with the key comparison reference value (KCRV) because estimation using the reported uncertainty value alone results in nonequivalence with the KCRV.
CCQM-K160
MEASURAND Mass fraction of Platinum in autocatalyst
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mg/kg |
mg/kg |
mg/kg |
||
| NIS | -94.9 | 111 | ||
| MIRS/IJS/F-2,O-2 | -20.1 | 130 | ||
| LGC | -15.1 | 19.2 | ||
| RISE | -8.0 | 30.6 | ||
| INTI | -7.0 | 120 | ||
| LNE | -4.0 | 56.2 | ||
| NIM | 5.0 | 19.2 | ||
| BAM | 13.8 | 16.7 | ||
| VNIIM | 14.0 | 57.4 | ||
| NMISA | 49.0 | 71.6 | ||
| PTB * | 368 | 77.1 |
* UPTB was estimated after summing in quadrature the participant's reported uncertainty value and the dark uncertainty (tau) associated with the key comparison reference value (KCRV) because estimation using the reported uncertainty value alone results in nonequivalence with the KCRV.
CCQM-K160
MEASURAND Mass fraction of Palladium in autocatalyst
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mg/kg |
mg/kg |
mg/kg |
||
| VNIIM* | -412 | 434 | ||
| INTI | -128 | 156 | ||
| NIS | -121 | 196 | ||
| MIRS/IJS/F-2,O-2 | -40.4 | 237 | ||
| LGC | 11.6 | 117 | ||
| RISE | 69.6 | 124 | ||
| LNE | 72.6 | 138 | ||
| NIM | 81.6 | 116 | ||
| BAM | 94.6 | 122 | ||
| NMISA* | 399 | 464 |
* UVNIIM and UNMISA were estimated after summing in quadrature the participant's reported uncertainty value and the dark uncertainty (tau) associated with the key comparison reference value (KCRV) because estimation using the reported uncertainty value alone results in nonequivalence with the KCRV.
CCQM-K160
CCQM-K160
MEASURAND Mass fraction of Rhodium in autocatalyst
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in mg/kg.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
mg/kg |
mg/kg |
mg/kg |
||
| INTI | -5.97 | 9.1 | ||
| VNIIM | -1.97 | 6.7 | ||
| LGC | -0.77 | 2.9 | ||
| LNE | 0.03 | 16.8 | ||
| RISE | 0.23 | 3.4 | ||
| NIM* | 3.63 | 5.6 |
* UNIM was estimated after summing in quadrature the participant's reported uncertainty value and the dark uncertainty (tau) associated with the key comparison reference value (KCRV) because estimation using the reported uncertainty value alone results in nonequivalence with the KCRV.
| Metrology area, Sub-field | Chemistry and Biology, Inorganics |
| Description | Platinum group elements in automotive catalyst |
| Time of measurements | 2019 - 2020 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | Mass fraction of Pd, Pt and Rh in mg/kg Nominal values : Pd (1000 mg/kg to 4000 mg/kg), Pt (1000 mg/kg to 4000 mg/kg) Rh (100 mg/kg to 500 mg/kg) |
| Transfer device | Unused autocatalyst material |
| Comparison type | Key Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | CCQM (Consultative Committee for Amount of Substance) |
| Comments | Result published on 30 July 2024 |
| Pilot institute |
LGC
Laboratory of the Government Chemist United Kingdom |
| Contact person | S. Hill +44 (0)2089438950 |
| Pilot laboratory | |
|---|---|
| LGC |
Laboratory of the Government Chemist, United Kingdom, EURAMET |
| BAM |
Bundesanstalt für Materialforschung und -prüfung, Germany, EURAMET |
| INTI |
Instituto Nacional de Tecnologia Industrial, Argentina, SIM |
| LNE |
Laboratoire national de métrologie et d'essais, France, EURAMET |
| MIRS/IJS/F-2,O-2 |
MIRS/Jozef Stefan Institute/Low and Medium Energy Physics F2, Environmental Sciences O2, Slovenia, EURAMET |
| NIM |
National Institute of Metrology, China, APMP |
| NIS |
National Institute for Standards, Egypt, AFRIMETS |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| RISE |
Research Institutes of Sweden AB, Sweden, EURAMET |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
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-K160
MEASURAND Mass fraction of Platinum in autocatalyst
The key comparison reference value and degrees of equivalence were calculated using the Decision Tree for Key Comparisons as explained on page 16 of the Final Report.
The key comparison reference value xR and its associated standard uncertainty uR is calculated using the Bayesian procedure (Hierarchical Gauss Gauss).
xR = 1893.0 mg/kg uR = 6.8 mg/kg
The degree of equivalence of laboratory i relative to the key comparison reference value xR is given by a pair of terms, both expressed in mg/kg:
Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence is calculated as explained on page 18 of the Final Report.
CCQM-K160
MEASURAND Mass fraction of Palladium in autocatalyst
The key comparison reference value and degrees of equivalence were calculated using the Decision Tree for Key Comparisons as explained on page 16 of the Final Report.
The key comparison reference value xR and its associated standard uncertainty uR is calculated using the Bayesian procedure (Hierarchical Gauss Gauss).
xR = 2863 mg/kg uR = 57 mg/kg
The degree of equivalence of laboratory i relative to the key comparison reference value xR is given by a pair of terms, both expressed in mg/kg:
Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence is calculated as explained on page 18 of the Final Report.
CCQM-K160
MEASURAND Mass fraction of Platinum in autocatalyst
The key comparison reference value and degrees of equivalence were calculated using the Decision Tree for Key Comparisons as explained on page 16 of the Final Report.
The key comparison reference value xR and its associated standard uncertainty uR is calculated using the Bayesian procedure (Hierarchical Gauss Gauss).
xR = 204.0 mg/kg uR = 1.1 mg/kg
The degree of equivalence of laboratory i relative to the key comparison reference value xR is given by a pair of terms, both expressed in mg/kg:
Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence is calculated as explained on page 18 of the Final Report.
CCQM-K160
MEASURAND Mass fraction of Platinum in autocatalyst
xi measured mass fraction reported by laboratory i, Labi
ui combined standard uncertainty of xi
| Labi | xi | ui | |
| mg/kg | mg/kg | ||
| NIS | 1798.119 | 56.550 | |
| MIRS/IJS/F-2,O-2 | 1873 | 66 | |
| LGC | 1878 | 7 | |
| RISE | 1885 | 14 | |
| INTI | 1886 | 61 | |
| LNE | 1889 | 28 | |
| NIM | 1898 | 7 | |
| BAM | 1906.8 | 5.0 | |
| VNIIM | 1907 | 28.5 | |
| NMISA | 1942 | 36 | |
| PTB * | 2261 | 36 |
| *Reported value is not included for the calculation of the key comparison reference value |
CCQM-K160
MEASURAND Mass fraction of Palladium in autocatalyst
xi measured mass fraction reported by laboratory i, Labi
ui combined standard uncertainty of xi
| Labi | xi | ui | |
| mg/kg | mg/kg | ||
| VNIIM* | 2451 | 40 | |
| INTI | 2735 | 55 | |
| NIS | 2742.522 | 81.252 | |
| MIRS/IJS/F-2,O-2 | 2823 | 106 | |
| LGC | 2875 | 14 | |
| RISE | 2933 | 27 | |
| LNE | 2936 | 40 | |
| NIM | 2945 | 14 | |
| BAM | 2958 | 22 | |
| NMISA* | 3262 | 93 |
| *Reported value is not included for the calculation of the key comparison reference value |
CCQM-K160
MEASURAND Mass fraction of Rhodium in autocatalyst
xi measured mass fraction reported by laboratory i, Labi
ui combined standard uncertainty of xi
| Labi | xi | ui | |
| mg/kg | mg/kg | ||
| INTI | 198 | 4.5 | |
| VNIIM | 202.0 | 3.2 | |
| LGC | 203.2 | 1.0 | |
| LNE | 204 | 8.5 | |
| RISE | 204.2 | 1.4 | |
| NIM* | 207.6 | 1.2 |
|
*Reported value is not included for the calculation of the key comparison reference value |
