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CCM.M-K2, EUROMET.M.M-K2, EUROMET.M.M-K2.1, APMP.M.M-K2, EURAMET.M.M-K2.3, and EURAMET.M.M-K2.5

MEASURAND : Mass
NOMINAL VALUE : 10 kg

Degrees of equivalence: Di and expanded uncertainty Ui (at a 95 % level of confidence) expressed in mg: Click here to view the Graph of equivalence

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CCM.M-K2, EUROMET.M.M-K2, EUROMET.M.M-K2.1, APMP.M.M-K2, EURAMET.M.M-K2.3, and EURAMET.M.M-K2.5

MEASURAND : Mass
NOMINAL VALUE : 10 kg

Degrees of equivalence: Di and expanded uncertainty Ui (at a 95 % level of confidence) expressed in mg

In dark blue: laboratories participant in CCM.M-K2
In green: laboratories participant in EUROMET.M.M-K2
In orange: laboratories participant in EUROMET.M.M-K2.1
In pink: laboratories participant in APMP.M.M-K2
In purple: laboratory participant in EURAMET.M.M-K2.3
In blue: laboratories participant in EURAMET.M.M-K2.5

The pair-wise degrees of equivalence shown in the table below are for laboratories participant in CCM.M-K2 only.
The pair-wise degrees of equivalence inside EUROMET.M.M-K2 are given in Table 6 to 10 in the EUROMET.M.M-K2 Final Report.
The pair-wise degrees of equivalence inside EUROMET.M.M-K2.1 are given in Table 7 to 11 in the EUROMET.M.M-K2.1 Final Report.
The pair-wise degrees of equivalence inside APMP.M.M-K2 are given in Table 4 to 8 in the APMP.M.M-K2 Final Report.
The pair-wise degrees of equivalence inside EURAMET.M.M-K2.3 are given in Table 5 in the EUROMET.M.M-K2.3 Final Report.

   
Lab iDiUi
 / mg/ mg
PTB-0.030.34
NMIA-0.100.72
KRISS-0.190.38
NMIJ0.170.61
NIM0.401.03
NPL-0.180.39
CENAM1.341.54
NRC1.821.96
NIST0.070.46
VSL-0.412.21
SMU1.621.74
METAS0.030.56
LNE-0.310.65
INRIM-0.270.52

Results are presented under A4 printable format in Summary Results (PDF file).

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RMO comparison
Linked comparison
EURAMET.M.M-K2.5
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Metrology area, Sub-field Mass and related quantities, Mass Standards
Description Comparison of mass standards
Time of measurements 2012
Status Approved for equivalence
Final Reports of the comparisons
EURAMET.M.M-K2.5 Final Report, 2014, 11 pages
Metrologia, 2015, 52, Tech. Suppl., 07001
Measurand Mass: 10 kg
Transfer device Stainless steel standards
Comparison type Key Comparison
Consultative Committee CCM (Consultative Committee for Mass and Related Quantities)
Conducted by EURAMET (European Association of National Metrology Institutes)
RMO Internal Identifier EURAMET Project No 1222
Comments

This comparison is a follow-up of comparison EUROMET.M.M-K2

CCM.M-K2 results published on 25 November 2003

Comparison of multiples and submultiples of the kilogram

APMP.M.M-K6, APMP.M.M-K2.1, EURAMET.M.M-K2.2 and EURAMET.M.M-K2.3 results are linked to those of CCM.M-K2 for nominal values 500 g, 20 g, 2 g, and 100 mg.
APMP.M.M-K2, EUROMET.M.M-K2, EUROMET.M.M-K2.1 and EURAMET.M.M-K2.3 results are linked to those of CCM.M-K2 for nominal values 500 g, 20 g, 2 g, 100 mg and 10 kg.
EURAMET.M.M-K2.5 results are linked to those of CCM.M-K2 for the nominal value of 10 kg.
Pilot institute BEV
Bundesamt für Eich- und Vermessungswesen
Austria
Contact person Z. Zelenka

+43 1 211 10 6607
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
BEV

Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET

BMM

Bureau of Metrology (Montenegro), Montenegro, EURAMET

DPM

Drejtoria e Pergjithshme e Metrologjise/General Directorate of Metrology, Albania, EURAMET

IMBIH

Institute of Metrology of Bosnia and Herzegovina, Bosnia and Herzegovina, EURAMET

MKEH

Hungarian Trade Licensing Office; now BFKH, Hungary, EURAMET

PTB

Physikalisch-Technische Bundesanstalt, Germany, EURAMET

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CCM.M-K2, EUROMET.M.M-K2, EUROMET.M.M-K2.1, APMP.M.M-K2, EURAMET.M.M-K2.3, and EURAMET.M.M-K2.5

MEASURAND : Mass
NOMINAL VALUE : 10 kg

  • Key comparison CCM.M-K2

The key comparison reference value, xR, is evaluated as the median of the xi values. Its standard uncertainty is denoted uR, see Appendix 1 of the CCM.M-K2 Final Report.

xR = 0.03 mg and uR = 0.12 mg
The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms:
Di = (xi - xR) and Ui, its expanded uncertainty (at a 95% level of confidence), both expressed in mg. Detailed information on the evaluation of Ui may be found in Section 5 of the CCM.M-K2 Final Report.
The degree of equivalence between two laboratories is given by a pair of terms:
Dij = Di - Dj = (xi - xj) and Uij, its expanded uncertainty (at a 95% level of confidence), both expressed in mg. Detailed information on the evaluation of Uij may be found in Section 6 of the CCM.M-K2 Final Report.
  • Linking EUROMET.M.M-K2 to CCM.M-K2

The linking process is explained in Appendix A of the EUROMET.M.M-K2 Final Report.

he degree of equivalence of each laboratory i participant in EUROMET.M.M-K2 with respect to the CCM.M-K2 key comparison reference value is given by a pair of terms: Di and Ui, its expanded uncertainty (at a 95% level of confidence), both expressed in mg. These are computed as explained in Appendix A of the EUROMET.M.M-K2 Final Report.
The degrees of equivalence between any of the laboratories participating in EUROMET.M.M-K2 and those participating in CCM.M-K2 are not computed.
The pair-wise degrees of equivalence inside EUROMET.M.M-K2 are given in Table 6 to 10 of the EUROMET.M.M-K2 Final Report.
  • Linking EUROMET.M.M-K2.1 to CCM.M-K2

The linking process is explained in Appendix A of the EUROMET.M.M-K2.1 Final Report.

The degree of equivalence of each laboratory i participant in EUROMET.M.M-K2.1 with respect to the CCM.M-K2 key comparison reference value is given by a pair of terms: Di and Ui, its expanded uncertainty (at a 95% level of confidence), both expressed in mg. These are computed as explained in Appendix A of the EUROMET.M.M-K2.1 Final Report.
The degrees of equivalence between any of the laboratories participating in EUROMET.M.M-K2.1 and those participating in CCM.M-K2 are not computed.
The pair-wise degrees of equivalence inside EUROMET.M.M-K2.1 are given in Table 7 to 11 of the EUROMET.M.M-K2.1 Final Report.
  • Linking APMP.M.M-K2 to CCM.M-K2

The linking process is explained in section 7.3 of the APMP.M.M-K2 Final Report.

The degree of equivalence of each laboratory i participant in APMP.M.M-K2 with respect to the CCM.M-K2 key comparison reference value is given by a pair of terms: Di and Ui, its expanded uncertainty (k = 2), both expressed in mg. These are computed as explained in section 7.3 of the APMP.M.M-K2 Final Report.
The degrees of equivalence between two laboratories participating in APMP.M.M-K2 is given by a pair of terms both expressed in mg: Dij = Di - Dj, and its expanded uncertainty (k = 2) Uij.
The pair-wise degrees of equivalence between any of the laboratories participating in APMP.M.M-K2 and those participating in CCM.M-K2 are not computed.
  • Linking EURAMET.M.M-K2.3 to CCM.M-K2

The link is made through the EUROMET.M.M-K2 key comparison using EIM results in both comparisons (see Section 7 of the EURAMET.M.M-K2.3 Final Report).

The pair-wise degrees of equivalence inside EURAMET.M.M-K2.3 are given in Table 5 of the EURAMET.M.M-K2.3 Final Report.
  • Linking EURAMET.M.M-K2.5 to CCM.M-K2

The link is made through the results of the PTB having participated in both comparisons CCM.M-K2 and EURAMET.M.M-K2.5
(see page 6 of the EURAMET.M.M-K2.5 Final Report).

No pair-wise degrees of equivalence involving EURAMET.M.M-K2.5 participants have been computed.
Comparison
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Results
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CCM.M-K2, EUROMET.M.M-K2, EUROMET.M.M-K2.1, APMP.M.M-K2, EURAMET.M.M-K2.3, and EURAMET.M.M-K2.5

MEASURAND : Mass
NOMINAL VALUE : 10 kg

  • Key comparison CCM.M-K2

x(rep)i : reported result obtained as the difference between the measurement of the mass standard carried out by laboratory i and its nominal value
ui : combined standard uncertainty of x(rep)i

Three sets of mass standards, designated as CA, CB and CC, were circulated.
For each set of mass standards the Pilot Laboratory, PTB, carried out two measurements: the first one before the circulation and the second one after the circulation, as indicated respectively by (1) and (2).

xi : difference between the mass determined by laboratory i, x(rep)i, and that determined by the Pilot Laboratory.
The Pilot's mass value is the average of the two results obtained before and after the circulation.

 Lab i x(rep)i ui xi Date of measurement
 Set of mass standards CA        
 PTB (1)

-2.135

 0.122 -0.006 Mar 98
 NMIA

-2.200

 0.340 -0.071 Jul 98
 KRISS

-2.296

 0.148 -0.167 Aug 98
 NMIJ

-1.930

 0.280 0.199 Sep 98
 NIM

-1.700

 0.500 0.429 Nov 98
 PTB (2)

-2.123

 0.122 0.006 Mar 99
 Set of mass standards CB        
 PTB (1)

-3.071

 0.122 -0.019 Mar 98
 NPL

-3.200

 0.150 -0.149 Aug 98
 CENAM

-1.680

 0.760 1.371 Sep 98
 NRC

-1.200

 0.970 1.851 Nov 98
 NIST

-2.952

 0.197 0.099

Dec 98

 PTB (2)

-3.032

0.122

0.019

Mar 99
 Set of mass standards CC        
 PTB (1)

-8.542

0.122

-0.023

Mar 98
 VSL

-8.900

1.100

-0.381

Jun 98
 SMU

-6.870

0.860

1.649

Aug 98
 METAS

-8.465

0.251

0.054

Sep 98
 LNE

-8.800

0.300

-0.281

Oct 98
 INRIM

-8.760

0.228

-0.241

Nov 98
 PTB (2)

-8.496

0.122

0.023

Mar 99

Note: all values are expressed in mg

  • Key comparison EUROMET.M.M-K2

The results and uncertainties reported by the participants in EUROMET.M.M-K2 are given in Table 2 of the EUROMET.M.M-K2 Final Report.

  • Key comparison EUROMET.M.M-K2.1

The results and uncertainties reported by the participants in EUROMET.M.M-K2.1 are given in Table 3 of the EUROMET.M.M-K2.1 Final Report.

  • Key comparison APMP.M.M-K2

The results and uncertainties reported by the participants in APMP.M.M-K2 are given in Table 1 of the APMP.M.M-K2 Final Report.

  • Key comparison EURAMET.M.M-K2.3

The results and uncertainties reported by the participants in EURAMET.M.M-K2.3 are given in Table 2 of the EURAMET.M.M-K2.3 Final Report.

  • Key comparison EURAMET.M.M-K2.5

The results and uncertainties reported by the participants in EURAMET.M.M-K2.5 are given in Table 7 of the EURAMET.M.M-K2.5 Final Report.