Comparison
Comparison close
Results

CCM.FF-K4, EURAMET.M.FF-K4.b, SIM.M.FF-K4, and APMP.M.FF-K4

MEASURAND: Volume
NOMINAL VALUE: 20 L

Degrees of equivalence Di and expanded uncertainty Ui at approximately 95% level of confidence, expressed in 10-6

Click on the Graph below to get a closer view and the names of the participating laboratories

Red diamonds : participants in CCM.FF-K4
Blue circles : participants in EURAMET.M.FF-K4.b
Green triangles : participants in SIM.M.FF-K4
Orange squares : participants in APMP.M.FF-K4

CCM.FF-K4 and SIM.M.FF-K4

MEASURAND: Volume
NOMINAL VALUE: 100 mL
TRANSFER STANDARD: TS 03.04.04

Degrees of equivalence Di and expanded uncertainty Ui at approximately a 95% level of confidence

Red diamonds : participants in CCM.FF-K4
Green triangles : participants in SIM.M.FF-K4
DBSJ = 10601 x 10-6
UBSJ = 721 x 10-6

Comparison
Comparison close
Results

CCM.FF-K4, EURAMET.M.FF-K4.b, SIM.M.FF-K4, and APMP.M.FF-K4

MEASURAND: Volume
NOMINAL VALUE: 20 L

Full set of degrees of equivalence relative to the CCM.FF-K4 key comparison reference value

In Red: participants in CCM.FF-K4
In Blue: participants in EURAMET.M.FF-K4.b
In Green: participants in SIM.M.FF-K4
In Orange: participants in APMP.M.FF-K4

Matrix of equivalence for key comparisons CCM.FF-K4 and EURAMET.M.FF-K4.b
Note: Pair-wise degrees of equivalence involving CCM.FF-K4 and SIM.M.FF-K4 are given on page 16 of the SIM.M.FF-K4 Final Report.
Pair-wise degrees of equivalence involving APMP.M.FF-K4 participants are given on page 17 of the APMP.M.FF-K4 Final Report.

   
Lab iDiUi
 / 10-6/ 10-6
CENAM-315
NIST-2634
NRC1330
SP034
PTB-119
INRIM2416
NMIA-521
INMETRO-314
SP*931
JV*3044
METAS*-6664
IPQ*1035
VSL*-1040
SMU*-2727
MKEH*326
INRIM*-727
PTB*-1127
DMDM*-1139
UME*-227
EIM*-1625
BEV*-830
CMI*-6689

* participants in EURAMET.M.FF-K4.b

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

CCM.FF-K4 and SIM.M.FF-K4

MEASURAND: Volume
NOMINAL VALUE: 100 mL
TRANSFER STANDARD: TS 03.04.04

   
Lab iDiUi
 / 10-6/ 10-6
CENAM-515
NRC3720
SP1327
INRIM-2121
NMIA1019
INMETRO-1417
CENAM*-322
BSJ*10601721
LACOMET*1364
CENAMEP AIP*-1532
INDECOPI*-3672
IBMETRO*2838
LATU*2630
INTI*-7563
INMETRO*-1622

* participants in SIM.M.FF-K4

Pair-wise degrees of equivalence involving CCM.FF-K4 and SIM.M.FF-K4 are given on page 18 of the SIM.M.FF-K4 Final Report.

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

Comparison
Comparison close
RMO comparison
Linked comparison
SIM.M.FF-K4
Metrology area, Sub-field Mass and related quantities, Fluid Flow
Description Liquid volume
Time of measurements 2007
Status Approved for equivalence
Final Reports of the comparisons
Measurand Water volume: 100 mL and 20 L
Transfer device One 20 L pipette and several 100 mL glass pycnometers
Comparison type Key Comparison
Consultative Committee CCM (Consultative Committee for Mass and Related Quantities)
Conducted by SIM (Inter-American Metrology System)
Comments

SIM.M.FF-K4 results published on 09 January 2010

SIM.M.FF-K4, EURAMET.M.FF-K4.b, and APMP.M.FF-K4 results are linked to those of CCM.FF-K4 for nominal value 20 L

SIM.M.FF-K4 results are linked to those of CCM.FF-K4 for nominal value 100 mL (Transfer Standard TS 03.04.04)

Liquid volume

Pilot institute CENAM
Centro Nacional de Metrologia
Mexico
Contact person R. Arias
rarias@cenam.mx
+52 442 2110571
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
CENAM

Centro Nacional de Metrologia, Mexico, SIM

BSJ

Bureau of Standards Jamaica, Jamaica, SIM

CENAMEP AIP

Centro Nacional de Metrología de Panama AIP, Panama, SIM

IBMETRO

Instituto Boliviano de Metrología, Bolivia, SIM

INDECOPI

Instituto Nacional de Defensa de la Competencia y de la Protección de la Propiedad Intelectual, Peru, SIM

INMETRO

Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM

INTI

Instituto Nacional de Tecnologia Industrial, Argentina, SIM

LACOMET

Laboratorio Costarricense de Metrologia, Costa Rica, SIM

LATU

Laboratorio Tecnologico del Uruguay, Uruguay, SIM

NIST

National Institute of Standards and Technology, United States, SIM

Comparison
Comparison close
Results

CCM.FF-K4, EURAMET.M.FF-K4.b, SIM.M.FF-K4, and APMP.M.FF-K4

  • Key comparison CCM.FF-K4

MEASURAND: Volume
NOMINAL VALUE: 20 L
THREE TRANSFER STANDARDS

For each of the transfer standards, the key comparison reference value, xR, is computed either as the median or as the weighted mean of the results. Its expanded uncertainty UR is approximately given at a 95% level of confidence.
SP is excluded from the analysis for the transfer standard TS 710-04.
The details are explained in Appendix C of the CCM.FF-K4 Final Report.

For each transfer standard, a first degree of equivalence for laboratory i with respect to the key comparison reference value is calculated as a pair of terms, both expressed in relative value:
Di TS= (xi - xR)/xR and its expanded uncertainty Ui TS at approximately a 95% level of confidence.
The degree of equivalence of laboratory i participating in this key comparison for the
20 L measurements is then given by a pair of terms, both expressed in relative value:
Di and its expanded uncertainty Ui at a ~95 % level of confidence, determined as the arithmetic average of the degrees of equivalence obtained for each individual transfer standard.

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in relative value:
Dij = Di - Dj and its expanded uncertainty Uij at approximately a 95% level of confidence.
  • Linking EURAMET.M.FF-K4.b to CCM.FF-K4

The linking process is described in section 7 of the EURAMET.M.FF-K4.b Final Report. The Matrix of equivalence obtained at 20 L in CCM.FF-K4 is thus extended to EURAMET.M.FF-K4.b participants.
Note: The Dij values given in the Annex 2 of the EURAMET.M.FF-K4.b Final Report correspond to -Dij values shown in the Matrix of equivalence.

  • Linking SIM.M.FF-K4 to CCM.FF-K4

The regional comparison reference value is first determined as the median of the SIM results for transfer standard TS 710-05, as described in section 8 of the SIM.M.FF-K4 Final Report.
Then the linking process uses common participation of CENAM, NIST and INMETRO in both key comparisons, as described in section 9 of the same Report.
Pair-wise degrees of equivalence involving CCM.FF-K4 and SIM.M.FF-K4 are given on page 16 of the SIM.M.FF-K4 Final Report.

  • Linking APMP.M.FF-K4 to CCM.FF-K4

The linking process uses common participation of NMIA and CENAM in both key comparisons, as described in section 7 of the APMP.M.FF-K4 Final Report.
Pair-wise degrees of equivalence involving APMP.M.FF-K4 participants are given on page 17 of the APMP.M.FF-K4 Final Report.

CCM.FF-K4 and SIM.M.FF-K4

MEASURAND: Volume
NOMINAL VALUE: 100 mL
TRANSFER STANDARD: TS 03.04.04

  • Key comparison CCM.FF-K4

The key comparison reference value, xR, is computed as the median of the results. Its expanded uncertainty UR is approximately given at a 95% level of confidence. The details are explained in Appendix C of the CCM.FF-K4 Final Report.
xR = 100.1599 mL and UR = 0.0013 mL

The degree of equivalence of laboratory i with respect to the key comparison reference value is given by a pair of terms, both expressed in relative value:
Di = (xi - xR)/xR and its expanded uncertainty Ui at approximately a 95% level of confidence.

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in relative value:
Dij = Di - Dj and its expanded uncertainty Uij at approximately a 95% level of confidence.
  • Linking SIM.M.FF-K4 to CCM.FF-K4

The regional comparison reference value is first determined as the median of the SIM results for transfer standard TS 03.04.04, as described in section 8 of the SIM.M.FF-K4 Final Report.
Then the linking process uses common participation of CENAM and INMETRO in both key comparisons, as described in section 9 of the same Report.
Pair-wise degrees of equivalence involving CCM.FF-K4 and SIM.M.FF-K4 are given on page 18 of the SIM.M.FF-K4 Final Report.

Comparison
Comparison close
Results

CCM.FF-K4, EURAMET.M.FF-K4.b, SIM.M.FF-K4, and APMP.M.FF-K4

MEASURAND: Volume
NOMINAL VALUE: 20 L

  • Key comparison CCM.FF-K4

xi : volume of water the transfer standard is able to deliver after a 60 second period of dripping-off at a reference temperature of 20 °C, measured by laboratory i
ui
: standard uncertainty of xi

TRANSFER STANDARD: TS 710-04

 Lab i xi
/ mL
ui
/ mL
Date of measurement
 CENAM 19 996.71 0.17 Dec 2003
 NIST 19 996.42 0.38 Jan 2004
 NRC 19 996.88 0.31 Mar 2004
 SP 19 992.87 0.36 Apr 2004
 PTB 19 996.80 0.20 Jun 2004
 INRIM 19 997.30 0.13 Aug / Oct 2004
 NMIA 19 996.80 0.23 Oct / Dec 2004
 INMETRO 19 996.77 0.15 Feb 2005

TRANSFER STANDARD: TS 710-05

 Lab i xi
/ mL
ui
/ mL
Date of measurement
 CENAM 19 997.31 0.17 Dec 2003
 NIST 19 996.83 0.25 Jan 2004
 NRC 19 997.75 0.31 Mar 2004
 SP 19 997.40 0.36 Apr 2004
 PTB 19 997.44 0.20 Jun 2004
 INRIM 19 998.00 0.15 Aug / Oct 2004
 NMIA 19 997.16 0.22 Oct / Dec 2004
 INMETRO 19 997.33 0.14 Feb 2005

TRANSFER STANDARD: TS 710-06

 Lab i xi
/ mL
ui
/ mL
Date of measurement
 CENAM 20 005.60 0.17 Dec 2003
 NIST 20 005.04 0.37 Jan 2004
 NRC 20 005.98 0.31 Mar 2004
 SP 20 005.63 0.36 Apr 2004
 PTB 20 005.54 0.20 Jun 2004
 INRIM 20 005.96 0.14 Aug / Oct 2004
 NMIA 20 005.59 0.22 Oct / Dec 2004
 INMETRO 20 005.54 0.15 Feb 2005

  • Key comparison EURAMET.M.FF-K4.b

TRANSFER STANDARD : TS 710-04

xi-EUR.b : volume of water measured by laboratory i participant in EURAMET.M.FF-K4.b
Ui-EUR.b : expanded uncertainty (k = 2) of xi-EUR.b

 Lab i xi-EUR.b
/ mL
Ui-EUR.b
/ mL
Date of measurement
 SP 20 002.44 0.49 May 07
 JV 20 002.87 0.80 Jul 07
 METAS 20 000.95 1.22 Aug 07
 IPQ

20 002.47

0.58

Aug 07

 VSL

20 002.07

0.70

Sep 07

 SMU

20 001.72

0.40

Sep 07

 MKEH

20 002.32

0.36

Oct 07

 INRIM

20 002.14

0.39

Nov 07

 PTB

20 002.04

0.39

Jan 08

 DMDM

20 002.05

0.68

Feb 08

 UME 20 002.23 0.39 Feb 08
 EIM 20 001.95 0.33 Mar 08
 BEV 20 002.11 0.48 Apr 08
 CMI

20 000.95

1.74

Apr 08

  • Key comparison SIM.M.FF-K4

TRANSFER STANDARD : TS 710-05

xi-SIM : volume of water measured by laboratory i participant in SIM.M.FF-K4
ui-SIM : standard uncertainty of xi-SIM

 Lab i xi-SIM
/ mL
Ui-SIM
/ mL
Date of measurement
 CENAM 19 995.03 0.25 Jan 07
 NIST 19 995.79 0.59 Mar 07
 BSJ 19 996.62 6.40 Apr 07
 LACOMET

19 990.39

1.46

Jun 07

 CENAMEP

19 995.47

0.53

Aug 07

 INDECOPI

19 994.45

0.89

Oct 07

 IBMETRO

19 994.18

0.96

Feb 08

 LATU

19 993.50

0.59

Apr 08

 INTI

19 995.04

0.12

Aug 08

 INMETRO

19 995.06

0.23

Oct 08

  • Key comparison APMP.M.FF-K4

TRANSFER STANDARD : TS 710-04

xi-APMP : volume of water measured by laboratory i participant in APMP.M.FF-K4
Ui-APMP : expanded uncertainty (k = 2, unless otherwise stated) of xi-APMP

 Lab i xi-APMP
/ mL
Ui-APMP
/ mL
Date of measurement
 CENAM 19 992.94 0.65 (k = 2.09) Jul 06
 NMIA 19 992.87 0.44 Jul - Aug 06
 SCL 19 992.50 0.50 Aug - Sep 06
 KRISS

19 992.87

0.44

Sep 06

 NIM

19 992.98

0.65 (k = 1.96)

Oct 06

 NMISA

19 991.57

2.30 (k = 2.28)

Nov 06 - Jan 07

 NIMT

19 990.03

0.95

Jan - Feb 07

 NMIJ

19 993.10

2.20

Feb - Mar 07

 VMI-STAMEQ

19 992.33

0.66

Jun 07

 MUSSD

19 993.39

0.72 (k = 2.19)

Jul 07

 NMIA 19 992.85 0.44 Jul - Aug 07

CCM.FF-K4 and SIM.M.FF-K4

  • Key comparison CCM.FF-K4

MEASURAND: Volume
NOMINAL VALUE: 100 mL
TRANSFER STANDARD: TS 03.04.04

xi : volume of water the transfer standard contains at a reference temperature of
20 °C, measured by laboratory i
ui
: standard uncertainty of xi

 Lab i xi
/ mL
ui
/ mL
Date of measurement
 CENAM 100.159 4 0.000 87 Dec 2003
 NRC 100.163 6 0.000 75 Mar 2004
 SP 100.161 2 0.001 6 Apr 2004
 INRIM 100.157 8 0.000 84 Aug / Oct 2004
 NMIA 100.160 9 0.001 1 Oct / Dec 2004
 INMETRO 100.158 5 0.000 72 Feb 2005

  • Key comparison SIM.M.FF-K4

During the comparison, three transfer standards were used, but one of the pycnometers (serial 03.04.15) suffered an irreversible damage; this occurred after INDECOPI tests. Therefore, pycnometer 03.01.15 was tested by CENAM, BSJ, LACOMET, CENAMEP AIP and INDECOPI. This transfer standard was then replaced by pycnometer 03.01.17, which was measured by CENAM, IBMETRO, LATU, INTI and INMETRO.

Degrees of equivalence are computed using results from pycnometer 03.04.04, as it is the only artefact measured by all participants. Only results obtained with this transfer standard are reported here.

MEASURAND: Volume
NOMINAL VALUE: 100 mL
TRANSFER STANDARD: TS 03.04.04

xi-SIM : volume of water measured by laboratory i participant in SIM.M.FF-K4
ui-SIM : standard uncertainty of xi-SIM

 Lab i xi-SIM
/ mL
ui-SIM
/ mL
Date of measurement
 CENAM 99.080 2 0.001 6 Jan 2007
 BSJ 100.130 7 0.037 Apr 2007
 LACOMET 99.081 8 0.003 1 Jun 2007
 CENAMEP 99.079 0 0.001 4 Aug 2007
 INDECOPI 99.076 9 0.003 5 Oct 2007
 IBMETRO

99.083 3

0.001 7

Feb 2008

 LATU

99.083 1

0.001 3

Apr 2008

 INTI

99.073 0

0.003 0

Aug 2008

 INMETRO 99.078 9 0.000 95 Oct 2008