EUROMET.TK3, EURAMET.TK3.3 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Argon Triple Point, 83.8058 K
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
both expressed in mK
Blue circles: participants in EUROMET.TK3
Pink triangle: participant in EURAMET.TK3.3 only
Green square: participant in EURAMET.TK3.5 only
U_{LACOMET} = 12 mK
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Mercury Triple Point, 234.3156 K
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
both expressed in mK
Blue circles: participants in EUROMET.TK3
Pink triangle: participant in EURAMET.TK3.3 only
Brown diamond: participant in EURAMET.TK3.1 only
Green square: participant in EURAMET.TK3.5 only
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Gallium Melting Point, 302.9146 K
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
both expressed in mK
Blue circles: participants in EUROMET.TK3
Pink triangle: participant in EURAMET.TK3.3 only
Brown diamond: participant in EURAMET.TK3.1 only
Green square: participant in EURAMET.TK3.5 only
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Indium Freezing Point, 429.7485 K
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
both expressed in mK
Blue circles: participants in EUROMET.TK3
Pink triangle: participant in EURAMET.TK3.3 only
Brown diamond: participant in EURAMET.TK3.1 only
Green square: participant in EURAMET.TK3.5 only
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Tin Freezing Point, 505.078 K
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
both expressed in mK
Blue circles: participants in EUROMET.TK3
Pink triangle: participant in EURAMET.TK3.3 only
Brown diamond: participant in EURAMET.TK3.1 only
Green square: participant in EURAMET.TK3.5 only
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Zinc Freezing Point, 692.677 K
Degrees of equivalence, D_{i} and expanded uncertainty U_{i} (k = 2),
both expressed in mK
Blue circles: participants in EUROMET.TK3
Pink triangle: participant in EURAMET.TK3.3 only
Brown diamond: participant in EURAMET.TK3.1 only
Green square: participant in EURAMET.TK3.5 only
EUROMET.TK3, EURAMET.TK3.3 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Argon Triple Point, 83.8058 K
All values given in the following Table are expressed in mK
Lab i  D_{i}  U_{i} 
PTB  0.17  0.79 
GUM  0.74  0.99 
INM(RO)  0.28  0.89 
UME  1.00  0.89 
NPL  0.11  0.45 
JV  0.17  0.94 
SMD  0.87  0.86 
INRIM  0.28  0.59 
CEM  0.57  1.07 
METAS  0.32  0.92 
IPQ  0.23  0.98 
MIRS/FELMK  0.05  0.92 
NMiVSL  0.01  0.52 
MIKES  0.30  1.14 
SP  0.30  0.96 
LNEINM  0.12  0.77 
LACOMET: participant in EURAMET.TK3.3 only
D_{LACOMET} = 0.1 mK and U_{LACOMET} = 12 mK
ROTH+CO.AG: participant in EURAMET.TK3.5 only
D_{ROTH+CO.AG} = 0.72 mK and U_{ROTH+CO.AG} = 1.14 mK
Results are presented under A4 printable format in Summary Results (PDF file).
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Mercury Triple Point, 234.3156 K
All values given in the following Table are expressed in mK
Lab i  D_{i}  U_{i} 
PTB  0.03  0.39 
GUM  0.13  0.74 
CMI  0.01  0.70 
INM(RO)  0.74  0.84 
UME  0.61  0.71 
NPL  0.30  0.52 
JV  0.17  0.91 
EIM  0.42  0.69 
SMD  0.34  0.67 
NML(IE)  0.42  0.80 
INRIM  0.11  0.37 
CEM  0.19  0.57 
METAS  0.04  0.51 
IPQ  0.19  0.66 
BEV  0.90  1.07 
MIRS/FELMK  0.17  0.68 
NMiVSL  0.11  0.45 
MIKES  0.05  0.82 
VMT/PFI  0.07  0.65 
SP  0.05  0.87 
DTI  2.66  3.08 
SMU  0.16  0.84 
OMH  0.29  0.63 
LNEINM  0.25  0.68 
LACOMET: participant in EURAMET.TK3.3 only
D_{LACOMET} = 0.29 mK and U_{LACOMET} = 0.85 mK
BIM: participant in EURAMET.TK3.1 only
D_{BIM} = 0.06 mK and U_{BIM} = 0.67 mK
ROTH+CO.AG: participant in EURAMET.TK3.5 only
D_{ROTH+CO.AG} = 0.51 mK and U_{ROTH+CO.AG} = 1.06 mK
Results are presented under A4 printable format in Summary Results (PDF file).
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Gallium Melting Point, 302.9146 K
All values given in the following Table are expressed in mK
Lab i  D_{i}  U_{i} 
PTB  0.15  0.30 
GUM  0.17  0.59 
CMI  0.18  0.56 
INM(RO)  0.16  0.44 
UME  0.02  0.57 
NPL  0.11  0.42 
JV  0.55  0.63 
EIM  0.25  0.61 
SMD  0.18  0.56 
NML(IE)  0.10  0.74 
INRIM  0.11  0.28 
CEM  0.20  0.55 
METAS  0.02  0.68 
IPQ  0.13  0.83 
BEV  0.42  1.04 
MIRS/FELMK  0.16  0.51 
NMiVSL  0.17  0.35 
MIKES  0.02  0.67 
VMT/PFI  0.18  0.54 
SP  0.21  0.56 
DTI  0.14  0.61 
SMU  0.13  0.51 
OMH  0.28  0.66 
LNEINM  0.09  0.28 
LACOMET: participant in EURAMET.TK3.3 only
D_{LACOMET} = 0.46 mK and U_{LACOMET} = 0.82 mK
BIM: participant in EURAMET.TK3.1 only
D_{BIM} = 0.16 mK and U_{BIM} = 0.63 mK
ROTH+CO.AG: participant in EURAMET.TK3.5 only
D_{ROTH+CO.AG} = 0.66 mK and U_{ROTH+CO.AG} = 1.06 mK
Results are presented under A4 printable format in Summary Results (PDF file).
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Indium Freezing Point, 429.7485 K
All values given in the following Table are expressed in mK
Lab i  D_{i}  U_{i} 
PTB  0.16  0.92 
GUM  1.71  1.35 
CMI  1.24  1.18 
INM(RO)  3.90  4.95 
UME  0.22  1.71 
NPL  0.73  0.83 
JV  0.28  1.92 
EIM  1.25  1.68 
SMD  0.56  1.68 
INRIM  0.03  0.72 
CEM  0.17  1.25 
METAS  0.40  1.12 
IPQ  0.92  2.03 
BEV  0.41  1.15 
MIRS/FELMK  0.41  1.41 
NMiVSL  0.45  0.56 
MIKES  0.14  1.99 
SP  0.29  1.24 
DTI  0.29  2.14 
SMU  0.33  0.99 
LNEINM  0.15  0.99 
LACOMET: participant in EURAMET.TK3.3 only
D_{LACOMET} = 0.6 mK and U_{LACOMET} = 2.1 mK
BIM: participant in EURAMET.TK3.1 only
D_{BIM} = 0.14 mK and U_{BIM} = 1.1 mK
ROTH+CO.AG: participant in EURAMET.TK3.5 only
D_{ROTH+CO.AG} = 1.09 mK and U_{ROTH+CO.AG} = 2.07 mK
Results are presented under A4 printable format in Summary Results (PDF file).
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Tin Freezing Point, 505.078 K
All values given in the following Table are expressed in mK
Lab i  D_{i}  U_{i} 
PTB  0.43  0.90 
GUM  0.37  1.26 
CMI  0.00  0.95 
INM(RO)  2.34  2.72 
UME  0.15  1.22 
NPL  0.29  0.87 
JV  0.65  1.45 
EIM  0.16  1.42 
SMD  2.24  1.22 
NML(IE)  0.06  1.59 
INRIM  0.06  0.95 
CEM  0.61  1.43 
METAS  0.69  1.07 
IPQ  1.07  1.43 
BEV  1.02  1.40 
MIRS/FELMK  0.44  1.15 
NMiVSL  0.22  0.92 
MIKES  0.50  1.34 
VMT/PFI  0.03  1.63 
SP  0.09  1.20 
DTI  0.39  1.98 
SMU  0.18  1.39 
OMH  0.20  1.90 
LNEINM  0.06  1.00 
LACOMET: participant in EURAMET.TK3.3 only
D_{LACOMET} = 0.7 mK and U_{LACOMET} = 2.2 mK
BIM: participant in EURAMET.TK3.1 only
D_{BIM} = 0.05 mK and U_{BIM} = 1.4 mK
ROTH+CO.AG: participant in EURAMET.TK3.5 only
D_{ROTH+CO.AG} = 0.82 mK and U_{ROTH+CO.AG} = 2.13 mK
Results are presented under A4 printable format in Summary Results (PDF file).
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Zinc Freezing Point, 692.677 K
All values given in the following Table are expressed in mK
Lab i  D_{i}  U_{i} 
PTB  0.49  1.44 
GUM  1.21  1.51 
CMI  0.07  1.38 
INM(RO)  1.70  3.57 
UME  0.50  1.61 
NPL  0.73  1.57 
JV  0.92  2.21 
EIM  0.75  2.20 
SMD  1.35  2.31 
NML(IE)  0.34  3.09 
INRIM  0.43  1.96 
CEM  0.30  2.36 
METAS  0.27  2.13 
IPQ  1.92  2.21 
BEV  0.92  2.13 
MIRS/FELMK  0.30  2.54 
NMiVSL  0.82  1.58 
MIKES  0.19  1.98 
VMT/PFI  0.37  2.11 
SP  0.44  1.87 
DTI  0.16  2.34 
SMU  0.60  1.32 
OMH  0.91  2.39 
LNEINM  0.86  1.69 
LACOMET: participant in EURAMET.TK3.3 only
D_{LACOMET} = 2.1 mK and U_{LACOMET} = 3.2 mK
BIM: participant in EURAMET.TK3.3 only
D_{BIM} = 1.62 mK and U_{BIM} = 2.2 mK
ROTH+CO.AG: participant in EURAMET.TK3.5 only
D_{ROTH+CO.AG} = 1.72 mK and U_{ROTH+CO.AG} = 2.82 mK
Results are presented under A4 printable format in Summary Results (PDF file).
Metrology area, Subfield  Thermometry, Standard Platinum Resistance Thermometers 
Description  Realizations of the ITS90 from 83.8 K to 692.7 K 
Time of measurements  2001  2004 
Status  Approved for equivalence 
Final Reports of the comparisons  
Measurand  Temperature: 83.8 K to 692.7 K 
Transfer device  Standard Platinum Resistance Thermometers 
Comparison type  Key Comparison 
Consultative Committee  CCT (Consultative Committee for Thermometry) 
Conducted by  EURAMET (European Association of National Metrology Institutes) 
RMO Internal Identifier  EUROMET Project No 552 
Comments  Results published on 04 October 2006 EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5 results are linked to those of EUROMET.TK3 Realizations of the ITS90 from 83.8 K to 692.7 K

Pilot institute 
LNEINM
Conservatoire national des arts et métiers / Institut National de Métrologie France 
Contact person  E. Renaot +33 (0) 1 40 27 20 21 
Pilot laboratory  

LNEINM 
Conservatoire national des arts et métiers / Institut National de Métrologie, France, EURAMET 
BEV 
Bundesamt für Eich und Vermessungswesen, Austria, EURAMET 
BNMINM 
Bureau National de Métrologie  Institut National de Métrologie, France, EURAMET 
CEM 
Centro Español de Metrologia, Spain, EURAMET 
CMI 
Czech Metrology Institute, Czechia, EURAMET 
CNRIMGC 
Consiglio Nazionale delle Ricerche  Istituto di Metrologia G. Colonnetti (until 2006), Italy, EURAMET 
DTI 
Danish Technological Institute, Denmark, EURAMET 
EIM 
Hellenic Institute of Metrology, Greece, EURAMET 
GUM 
Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET 
INM 
National Institute of Metrology, Romania, EURAMET 
IPQ 
Instituto Portugues da Qualidade, Portugal, EURAMET 
JV 
Justervesenet, Norway, EURAMET 
METAS 
Federal Institute of Metrology, Switzerland, EURAMET 
MIKES 
VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus, Finland, EURAMET 
MIRS/FELMK 
Metrology Institute of Republic of Slovenia / Faculty of Electrical Engineering  Laboratory of Metrology and Quality, Slovenia, EURAMET 
NML(IE) 
National Metrology Laboratory of Ireland; now NSAI National Metrology Laboratory, NSAI NML, Ireland, EURAMET 
NMiVSL 
Nederlands Meetinstituut  Van Swinden Laboratorium (became VSL in 2009), Netherlands, EURAMET 
NPL 
National Physical Laboratory, United Kingdom, EURAMET 
OMH 
Országos Mérésügyi Hivatal; Subsequently MKEH, now BKFH, Hungary, EURAMET 
PTB 
PhysikalischTechnische Bundesanstalt, Germany, EURAMET 
SMD 
Service de la Métrologie Belge, Belgium, EURAMET 
SMU 
Slovensky Metrologicky Ustav, Slovakia, EURAMET 
SP 
Technical Research Institute of Sweden from 2017 Research Institutes of Sweden AB, Sweden, EURAMET 
UME 
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET 
VMT/PFI 
State Metrology Service / Semiconductor Physics Institute; now: Center for Physical Sciences and Technology, FTMC, Lithuania, EURAMET 
This page proposes printout 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" :
EUROMET.TK3, EURAMET.TK3.3 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Argon Triple Point, 83.8058 K
For each fixedpoint temperature, the difference (T_{R}  T_{P}) between the EUROMET reference value, T_{R}, and T_{P}, is computed as the weighted mean of all participants' results (T_{i}  T_{P}), with weights inversely proportional to u_{iP}, as explained in Section 8.1 of the Final Report. 
For each fixedpoint temperature, the degree of equivalence of laboratory i with respect to the EUROMET reference value is given by a pair of terms, both expressed in mK: D_{i} = (T_{i}  T_{R}), obtained from the differences relative to the Pilot Laboratory 
For each fixedpoint temperature, the degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in mK: D_{ij} = D_{i}  D_{j}, and U_{ij}, its expanded uncertainty at a 95 % level of confidence. The computation of U_{ij} between participants in the same loop, and participants in different loops is explained in Sections 11.1 and 11.2 of the Final Report. 
The Pilot Laboratory and the five CoPilots have participated in both comparisons.
The comparison of their averaged results in both exercises shows that they perform equally within 0.1 mK for all temperatures, except for the Zinc fixedpoint temperature (0.23 mK) and the Tin fixedpoint temperature (0.14 mK), as explained in Section 10.1 of the Final Report.
The uncertainty linked with the reproducibility between both exercises in also computed (see Table 28 on page 60 of the Final Report) and taken into account for the estimation of the pairwise degrees of equivalence between participants in EUROMET.TK3 and CCTK3 (see Section 11.3 of the Final Report).
For each fixedpoint temperature, the BIPM key comparison database displays the degrees of equivalence relative to the EUROMET reference value, and the pairwise degrees of equivalence computed inside the EUROMET key comparison.
The LACOMET results obtained in EURAMET.TK3.3 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of CEM in EUROMET.TK3, whose results are linked to those of CCTK3, as described above.
The ROTH+CO.AG results obtained in EURAMET.TK3.5 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
This makes it possible to extend the EUROMET.TK3 graphs of equivalence with LACOMET and ROTH+CO.AG results.
LACOMET degrees of equivalence relative to the CCTK3 ARV are given on page 17 of the EURAMET.TK3.3 Final Report.
The computation of ROTH+CO.AG degrees of equivalence relative to the CCTK3 ARV is explained in Section 8.1 of the EURAMET.TK3.5 Final Report.
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Mercury Triple Point, 234.3156 K
For each fixedpoint temperature, the difference (T_{R}  T_{P}) between the EUROMET reference value, T_{R}, and T_{P}, is computed as the weighted mean of all participants' results (T_{i}  T_{P}), with weights inversely proportional to u_{iP}, as explained in Section 8.1 of the Final Report. 
For each fixedpoint temperature, the degree of equivalence of laboratory i with respect to the EUROMET reference value is given by a pair of terms, both expressed in mK: D_{i} = (T_{i}  T_{R}), obtained from the differences relative to the Pilot Laboratory 
For each fixedpoint temperature, the degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in mK: D_{ij} = D_{i}  D_{j}, and U_{ij}, its expanded uncertainty at a 95 % level of confidence. The computation of U_{ij} between participants in the same loop, and participants in different loops is explained in Sections 11.1 and 11.2 of the Final Report. 
The Pilot Laboratory and the five CoPilots have participated in both comparisons.
The comparison of their averaged results in both exercises shows that they perform equally within 0.1 mK for all temperatures, except for the Zinc fixedpoint temperature (0.23 mK) and the Tin fixedpoint temperature (0.14 mK), as explained in Section 10.1 of the Final Report.
The uncertainty linked with the reproducibility between both exercises in also computed (see Table 28 on page 60 of the Final Report) and taken into account for the estimation of the pairwise degrees of equivalence between participants in EUROMET.TK3 and CCTK3 (see Section 11.3 of the Final Report).
For each fixedpoint temperature, the BIPM key comparison database displays the degrees of equivalence relative to the EUROMET reference value, and the pairwise degrees of equivalence computed inside the EUROMET key comparison.
The LACOMET results obtained in EURAMET.TK3.3 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of CEM in EUROMET.TK3, whose results are linked to those of CCTK3, as described above.
The BIM results obtained in EURAMET.TK3.1 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
The ROTH+CO.AG results obtained in EURAMET.TK3.5 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
This makes it possible to extend the EUROMET.TK3 graphs of equivalence with LACOMET, BIM and ROTH+CO.AG results.
LACOMET and BIM degrees of equivalence relative to the CCTK3 ARV are given on page 17 of the EURAMET.TK3.3 Final Report and on pages 10 and 11 of the EURAMET.TK3.1 Final Report, respectively.
The computation of ROTH+CO.AG degrees of equivalence relative to the CCTK3 ARV is explained in Section 8.1 of the EURAMET.TK3.5 Final Report.
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Gallium Melting Point, 302.9146 K
For each fixedpoint temperature, the difference (T_{R}  T_{P}) between the EUROMET reference value, T_{R}, and T_{P}, is computed as the weighted mean of all participants' results (T_{i}  T_{P}), with weights inversely proportional to u_{iP}, as explained in Section 8.1 of the Final Report. 
For each fixedpoint temperature, the degree of equivalence of laboratory i with respect to the EUROMET reference value is given by a pair of terms, both expressed in mK: D_{i} = (T_{i}  T_{R}), obtained from the differences relative to the Pilot Laboratory 
For each fixedpoint temperature, the degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in mK: D_{ij} = D_{i}  D_{j}, and U_{ij}, its expanded uncertainty at a 95 % level of confidence. The computation of U_{ij} between participants in the same loop, and participants in different loops is explained in Sections 11.1 and 11.2 of the Final Report. 
The Pilot Laboratory and the five CoPilots have participated in both comparisons.
The comparison of their averaged results in both exercises shows that they perform equally within 0.1 mK for all temperatures, except for the Zinc fixedpoint temperature (0.23 mK) and the Tin fixedpoint temperature (0.14 mK), as explained in Section 10.1 of the Final Report.
The uncertainty linked with the reproducibility between both exercises in also computed (see Table 28 on page 60 of the Final Report) and taken into account for the estimation of the pairwise degrees of equivalence between participants in EUROMET.TK3 and CCTK3 (see Section 11.3 of the Final Report).
For each fixedpoint temperature, the BIPM key comparison database displays the degrees of equivalence relative to the EUROMET reference value, and the pairwise degrees of equivalence computed inside the EUROMET key comparison.
The LACOMET results obtained in EURAMET.TK3.3 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of CEM in EUROMET.TK3, whose results are linked to those of CCTK3, as described above.
The BIM results obtained in EURAMET.TK3.1 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
The ROTH+CO.AG results obtained in EURAMET.TK3.5 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
This makes it possible to extend the EUROMET.TK3 graphs of equivalence with LACOMET, BIM and ROTH+CO.AG results.
LACOMET and BIM degrees of equivalence relative to the CCTK3 ARV are given on page 17 of the EURAMET.TK3.3 Final Report and on pages 10 and 11 of the EURAMET.TK3.1 Final Report, respectively.
The computation of ROTH+CO.AG degrees of equivalence relative to the CCTK3 ARV is explained in Section 8.1 of the EURAMET.TK3.5 Final Report.
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Indium Freezing Point, 429.7485 K
For each fixedpoint temperature, the difference (T_{R}  T_{P}) between the EUROMET reference value, T_{R}, and T_{P}, is computed as the weighted mean of all participants' results (T_{i}  T_{P}), with weights inversely proportional to u_{iP}, as explained in Section 8.1 of the Final Report. 
For each fixedpoint temperature, the degree of equivalence of laboratory i with respect to the EUROMET reference value is given by a pair of terms, both expressed in mK: D_{i} = (T_{i}  T_{R}), obtained from the differences relative to the Pilot Laboratory 
For each fixedpoint temperature, the degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in mK: D_{ij} = D_{i}  D_{j}, and U_{ij}, its expanded uncertainty at a 95 % level of confidence. The computation of U_{ij} between participants in the same loop, and participants in different loops is explained in Sections 11.1 and 11.2 of the Final Report. 
The Pilot Laboratory and the five CoPilots have participated in both comparisons.
The comparison of their averaged results in both exercises shows that they perform equally within 0.1 mK for all temperatures, except for the Zinc fixedpoint temperature (0.23 mK) and the Tin fixedpoint temperature (0.14 mK), as explained in Section 10.1 of the Final Report.
The uncertainty linked with the reproducibility between both exercises in also computed (see Table 28 on page 60 of the Final Report) and taken into account for the estimation of the pairwise degrees of equivalence between participants in EUROMET.TK3 and CCTK3 (see Section 11.3 of the Final Report).
For each fixedpoint temperature, the BIPM key comparison database displays the degrees of equivalence relative to the EUROMET reference value, and the pairwise degrees of equivalence computed inside the EUROMET key comparison.
The LACOMET results obtained in EURAMET.TK3.3 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of CEM in EUROMET.TK3, whose results are linked to those of CCTK3, as described above.
The BIM results obtained in EURAMET.TK3.1 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
The ROTH+CO.AG results obtained in EURAMET.TK3.5 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
This makes it possible to extend the EUROMET.TK3 graphs of equivalence with LACOMET, BIM and ROTH+CO.AG results.
LACOMET and BIM degrees of equivalence relative to the CCTK3 ARV are given on page 17 of the EURAMET.TK3.3 Final Report and on pages 10 and 11 of the EURAMET.TK3.1 Final Report, respectively.
The computation of ROTH+CO.AG degrees of equivalence relative to the CCTK3 ARV is explained in Section 8.1 of the EURAMET.TK3.5 Final Report.
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Tin Freezing Point, 505.078 K
For each fixedpoint temperature, the difference (T_{R}  T_{P}) between the EUROMET reference value, T_{R}, and T_{P}, is computed as the weighted mean of all participants' results (T_{i}  T_{P}), with weights inversely proportional to u_{iP}, as explained in Section 8.1 of the Final Report. 
For each fixedpoint temperature, the degree of equivalence of laboratory i with respect to the EUROMET reference value is given by a pair of terms, both expressed in mK: D_{i} = (T_{i}  T_{R}), obtained from the differences relative to the Pilot Laboratory 
For each fixedpoint temperature, the degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in mK: D_{ij} = D_{i}  D_{j}, and U_{ij}, its expanded uncertainty at a 95 % level of confidence. The computation of U_{ij} between participants in the same loop, and participants in different loops is explained in Sections 11.1 and 11.2 of the Final Report. 
The Pilot Laboratory and the five CoPilots have participated in both comparisons.
The comparison of their averaged results in both exercises shows that they perform equally within 0.1 mK for all temperatures, except for the Zinc fixedpoint temperature (0.23 mK) and the Tin fixedpoint temperature (0.14 mK), as explained in Section 10.1 of the Final Report.
The uncertainty linked with the reproducibility between both exercises in also computed (see Table 28 on page 60 of the Final Report) and taken into account for the estimation of the pairwise degrees of equivalence between participants in EUROMET.TK3 and CCTK3 (see Section 11.3 of the Final Report).
For each fixedpoint temperature, the BIPM key comparison database displays the degrees of equivalence relative to the EUROMET reference value, and the pairwise degrees of equivalence computed inside the EUROMET key comparison.
The LACOMET results obtained in EURAMET.TK3.3 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of CEM in EUROMET.TK3, whose results are linked to those of CCTK3, as described above.
The BIM results obtained in EURAMET.TK3.1 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
The ROTH+CO.AG results obtained in EURAMET.TK3.5 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
This makes it possible to extend the EUROMET.TK3 graphs of equivalence with LACOMET, BIM and ROTH+CO.AG results.
LACOMET and BIM degrees of equivalence relative to the CCTK3 ARV are given on page 17 of the EURAMET.TK3.3 Final Report and on pages 10 and 11 of the EURAMET.TK3.1 Final Report, respectively.
The computation of ROTH+CO.AG degrees of equivalence relative to the CCTK3 ARV is explained in Section 8.1 of the EURAMET.TK3.5 Final Report.
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Zinc Freezing Point, 692.677 K
For each fixedpoint temperature, the difference (T_{R}  T_{P}) between the EUROMET reference value, T_{R}, and T_{P}, is computed as the weighted mean of all participants' results (T_{i}  T_{P}), with weights inversely proportional to u_{iP}, as explained in Section 8.1 of the Final Report. 
For each fixedpoint temperature, the degree of equivalence of laboratory i with respect to the EUROMET reference value is given by a pair of terms, both expressed in mK: D_{i} = (T_{i}  T_{R}), obtained from the differences relative to the Pilot Laboratory 
For each fixedpoint temperature, the degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in mK: D_{ij} = D_{i}  D_{j}, and U_{ij}, its expanded uncertainty at a 95 % level of confidence. The computation of U_{ij} between participants in the same loop, and participants in different loops is explained in Sections 11.1 and 11.2 of the Final Report. 
The Pilot Laboratory and the five CoPilots have participated in both comparisons.
The comparison of their averaged results in both exercises shows that they perform equally within 0.1 mK for all temperatures, except for the Zinc fixedpoint temperature (0.23 mK) and the Tin fixedpoint temperature (0.14 mK), as explained in Section 10.1 of the Final Report.
The uncertainty linked with the reproducibility between both exercises in also computed (see Table 28 on page 60 of the Final Report) and taken into account for the estimation of the pairwise degrees of equivalence between participants in EUROMET.TK3 and CCTK3 (see Section 11.3 of the Final Report).
For each fixedpoint temperature, the BIPM key comparison database displays the degrees of equivalence relative to the EUROMET reference value, and the pairwise degrees of equivalence computed inside the EUROMET key comparison.
The LACOMET results obtained in EURAMET.TK3.3 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of CEM in EUROMET.TK3, whose results are linked to those of CCTK3, as described above.
The BIM results obtained in EURAMET.TK3.1 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
The ROTH+CO.AG results obtained in EURAMET.TK3.5 are linked to the results of EUROMET.TK3 and CCTK3 using the participation of VSL in EUROMET.TK3.
This makes it possible to extend the EUROMET.TK3 graphs of equivalence with LACOMET, BIM and ROTH+CO.AG results.
LACOMET and BIM degrees of equivalence relative to the CCTK3 ARV are given on page 17 of the EURAMET.TK3.3 Final Report and on pages 10 and 11 of the EURAMET.TK3.1 Final Report, respectively.
The computation of ROTH+CO.AG degrees of equivalence relative to the CCTK3 ARV is explained in Section 8.1 of the EURAMET.TK3.5 Final Report.
EUROMET.TK3, EURAMET.TK3.3 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Argon Triple Point, 83.8058 K
MEASURAND : Resistance ratio, W, at fixedpoint temperature
PILOT LABORATORY : LNEINM
The key comparison EUROMET.TK3 was carried out in five loops as described on Figure 1.1 on page 5 of the Final Report:
The individual laboratory measurements are given in Section 5 of the Final Report.
The temperature differences (T_{i}  T_{P}) and associated standard uncertainties u_{iP} are then deduced independently of the measurement loop. The indexes "i" and "P" refer respectively to laboratory i and to the Pilot Laboratory, and T to the temperature of a given fixed point.
Key comparison EURAMET.TK3.3 is a bilateral comparison between CEM and LACOMET carried out in 2009
For the Argon Triple Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{LACOMET}  T_{CEM} = 0.4 mK and U(T_{LACOMET}  T_{CEM}) = 11 mK
Key comparison EURAMET.TK3.5 is a bilateral comparison between VSL and ROTH+CO.AG carried out in 2013
For the Argon Triple Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{ROTH+CO.AG}  T_{VSL} = 0.72 mK and U(T_{ROTH+CO.AG}  T_{VSL}) = 1.02 mK
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Mercury Triple Point, 234.3156 K
MEASURAND : Resistance ratio, W, at fixedpoint temperature
PILOT LABORATORY : LNEINM
The key comparison EUROMET.TK3 was carried out in five loops as described on Figure 1.1 on page 5 of the Final Report:
The individual laboratory measurements are given in Section 5 of the Final Report.
The temperature differences (T_{i}  T_{P}) and associated standard uncertainties u_{iP} are then deduced independently of the measurement loop. The indexes "i" and "P" refer respectively to laboratory i and to the Pilot Laboratory, and T to the temperature of a given fixed point.
Key comparison EURAMET.TK3.3 is a bilateral comparison between CEM and LACOMET carried out in 2009
For the Mercury Triple Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{LACOMET}  T_{CEM} = 0.10 mK and U(T_{LACOMET}  T_{CEM}) = 0.64 mK
Key comparison EURAMET.TK3.1 is a bilateral comparison between BIM and VSL carried out in 20082009
For the Mercury Triple Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{BIM}  T_{VSL} = 0.17 mK and U(T_{BIM}  T_{VSL}) = 0.49 mK
Key comparison EURAMET.TK3.5 is a bilateral comparison between VSL and ROTH+CO.AG carried out in 2013
For the Mercury Triple Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{ROTH+CO.AG}  T_{VSL} = 0.38 mK and U(T_{ROTH+CO.AG}  T_{VSL}) = 0.96 mK
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Gallium Melting Point, 302.9146 K
MEASURAND : Resistance ratio, W, at fixedpoint temperature
PILOT LABORATORY : LNEINM
The key comparison EUROMET.TK3 was carried out in five loops as described on Figure 1.1 on page 5 of the Final Report:
The individual laboratory measurements are given in Section 5 of the Final Report.
The temperature differences (T_{i}  T_{P}) and associated standard uncertainties u_{iP} are then deduced independently of the measurement loop. The indexes "i" and "P" refer respectively to laboratory i and to the Pilot Laboratory, and T to the temperature of a given fixed point.
Key comparison EURAMET.TK3.3 is a bilateral comparison between CEM and LACOMET carried out in 2009
For the Gallium Melting Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{LACOMET}  T_{CEM} = 0.26 mK and U(T_{LACOMET}  T_{CEM}) = 0.61 mK
Key comparison EURAMET.TK3.1 is a bilateral comparison between BIM and VSL carried out in 20082009
For the Gallium Melting Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{BIM}  T_{VSL} = 0.01 mK and U(T_{BIM}  T_{VSL}) = 0.52 mK
Key comparison EURAMET.TK3.5 is a bilateral comparison between VSL and ROTH+CO.AG carried out in 2013
For the Gallium Melting Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{ROTH+CO.AG}  T_{VSL} = 0.78 mK and U(T_{ROTH+CO.AG}  T_{VSL}) = 0.93 mK
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Indium Freezing Point, 429.7485 K
MEASURAND : Resistance ratio, W, at fixedpoint temperature
PILOT LABORATORY : LNEINM
The key comparison EUROMET.TK3 was carried out in five loops as described on Figure 1.1 on page 5 of the Final Report:
The individual laboratory measurements are given in Section 5 of the Final Report.
The temperature differences (T_{i}  T_{P}) and associated standard uncertainties u_{iP} are then deduced independently of the measurement loop. The indexes "i" and "P" refer respectively to laboratory i and to the Pilot Laboratory, and T to the temperature of a given fixed point.
Key comparison EURAMET.TK3.3 is a bilateral comparison between CEM and LACOMET carried out in 2009
For the Indium Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{LACOMET}  T_{CEM} = 0.4 mK and U(T_{LACOMET}  T_{CEM}) = 1.7 mK
Key comparison EURAMET.TK3.1 is a bilateral comparison between BIM and VSL carried out in 20082009
For the Indium Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{BIM}  T_{VSL} = 0.31 mK and U(T_{BIM}  T_{VSL}) = 0.90 mK
Key comparison EURAMET.TK3.5 is a bilateral comparison between VSL and ROTH+CO.AG carried out in 2013
For the Indium Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{ROTH+CO.AG}  T_{VSL} = 1.47 mK and U(T_{ROTH+CO.AG}  T_{VSL}) = 1.99 mK
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Tin Freezing Point, 505.078 K
MEASURAND : Resistance ratio, W, at fixedpoint temperature
PILOT LABORATORY : LNEINM
The key comparison EUROMET.TK3 was carried out in five loops as described on Figure 1.1 on page 5 of the Final Report:
The individual laboratory measurements are given in Section 5 of the Final Report.
The temperature differences (T_{i}  T_{P}) and associated standard uncertainties u_{iP} are then deduced independently of the measurement loop. The indexes "i" and "P" refer respectively to laboratory i and to the Pilot Laboratory, and T to the temperature of a given fixed point.
Key comparison EURAMET.TK3.3 is a bilateral comparison between CEM and LACOMET carried out in 2009
For the Tin Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{LACOMET}  T_{CEM} = 1.3 mK and U(T_{LACOMET}  T_{CEM}) = 1.7 mK
Key comparison EURAMET.TK3.1 is a bilateral comparison between BIM and VSL carried out in 20082009
For the Tin Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{BIM}  T_{VSL} = 0.17 mK and U(T_{BIM}  T_{VSL}) = 1.0 mK
Key comparison EURAMET.TK3.5 is a bilateral comparison between VSL and ROTH+CO.AG carried out in 2013
For the Tin Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{ROTH+CO.AG}  T_{VSL} = 0.65 mK and U(T_{ROTH+CO.AG}  T_{VSL}) = 1.92 mK
EUROMET.TK3, EURAMET.TK3.3, EURAMET.TK3.1 and EURAMET.TK3.5
NOMINAL TEMPERATURE : Zinc Freezing Point, 692.677 K
MEASURAND : Resistance ratio, W, at fixedpoint temperature
PILOT LABORATORY : LNEINM
The key comparison EUROMET.TK3 was carried out in five loops as described on Figure 1.1 on page 5 of the Final Report:
The individual laboratory measurements are given in Section 5 of the Final Report.
The temperature differences (T_{i}  T_{P}) and associated standard uncertainties u_{iP} are then deduced independently of the measurement loop. The indexes "i" and "P" refer respectively to laboratory i and to the Pilot Laboratory, and T to the temperature of a given fixed point.
Key comparison EURAMET.TK3.3 is a bilateral comparison between CEM and LACOMET carried out in 2009
For the Zinc Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{LACOMET}  T_{CEM} = 2.4 mK and U(T_{LACOMET}  T_{CEM}) = 2.1 mK
Key comparison EURAMET.TK3.1 is a bilateral comparison between BIM and VSL carried out in 20082009
For the Zinc Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{BIM}  T_{VSL} = 0.80 mK and U(T_{BIM}  T_{VSL}) = 1.6 mK
Key comparison EURAMET.TK3.5 is a bilateral comparison between VSL and ROTH+CO.AG carried out in 2013
For the Zinc Freezing Point, the temperature difference and corresponding expanded uncertainty (k = 2) are:
T_{ROTH+CO.AG}  T_{VSL} = 2.44 mK and U(T_{ROTH+CO.AG}  T_{VSL}) = 2.33 mK