The KCDB - the BIPM key comparison database – supports the CIPM MRA. The KCDB contains information on the internationally recognized Calibration and Measurement Capabilities (CMCs) for services available from the participating institutes, and the key and supplementary comparisons supporting these CMCs.

All data listed in the KCDB have been reviewed and approved within the CIPM Mutual Recognition Arrangement
CCM.FF-K4, EURAMET.M.FF-K4.b, SIM.M.FF-K4, and APMP.M.FF-K4

**MEASURAND: VolumeNOMINAL VALUE: 20 L**

**Degrees of equivalence D_{i} and expanded uncertainty U_{i} 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, EUROMET.M.FF-K4, and APMP.M.FF-K4

**MEASURAND: VolumeNOMINAL VALUE: 100 mLCCM.FF-K4 AND APMP.M.FF-K4 TRANSFER STANDARD: TS 03.04.03**

**Degrees of equivalence D_{i} and expanded uncertainty U_{i} at approximately a 95% level of confidence**

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 EUROMET.FF-K4 **Open symbols **: common participants in CCM.FF-K4 and EUROMET.M.FF-K4 comparisons**Orange squares** : participants in APMP.M.FF-K4

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

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.04.04**

**Degrees of equivalence D_{i} and expanded uncertainty U_{i} at approximately a 95% level of confidence**

Red diamonds : participants in CCM.FF-K4

Green triangles : participants in SIM.M.FF-K4*D*_{BSJ} = 10601 x 10^{-6}*U*_{BSJ} = 721 x 10^{-6}

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.13**

**Degrees of equivalence D_{i} and expanded uncertainty U_{i} at approximately a 95% level of confidence**

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.14**

*D _{i}* and expanded uncertainty

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.15**

*D _{i}* and expanded uncertainty

CCM.FF-K4, and APMP.M.FF-K4

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.17**

*D _{i}* and expanded uncertainty

Orange squares : participants in APMP.M.FF-K4*D*_{NIMT} = -147 x 10^{-6} and *U*_{NIMT} = 29 x 10^{-6}*D*_{MUSSD }= -97 x 10^{-6} and *U*_{MUSSD} = 66 x 10^{-6}

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

**MEASURAND: VolumeNOMINAL 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 i | D_{i} | U_{i} |

/ 10^{-6} | / 10^{-6} | |

CENAM | -3 | 15 |

NIST | -26 | 34 |

NRC | 13 | 30 |

SP | 0 | 34 |

PTB | -1 | 19 |

INRIM | 24 | 16 |

NMIA | -5 | 21 |

INMETRO | -3 | 14 |

SP* | 9 | 31 |

JV* | 30 | 44 |

METAS* | -66 | 64 |

IPQ* | 10 | 35 |

VSL* | -10 | 40 |

SMU* | -27 | 27 |

MKEH* | 3 | 26 |

INRIM* | -7 | 27 |

PTB* | -11 | 27 |

DMDM* | -11 | 39 |

UME* | -2 | 27 |

EIM* | -16 | 25 |

BEV* | -8 | 30 |

CMI* | -66 | 89 |

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

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

**CCM.FF-K4, EUROMET.M.FF-K4, and APMP.M.FF-K4**

**MEASURAND: VolumeNOMINAL VALUE: 100 mLCCM.FF-K4 and APMP.M.FF-K4 TRANSFER STANDARD: TS 03.04.03**

Lab i | D_{i} | U_{i} |

/ 10^{-6} | / 10^{-6} | |

CENAM | -7 | 16 |

NRC | 36 | 20 |

SP | 8 | 26 |

INRIM | -12 | 18 |

NMIA | 13 | 20 |

INMETRO | -13 | 16 |

IPQ* | 3 | 9 |

CMI* | -37 | 51 |

LNE* | 9 | 17 |

FORCE* | 3 | 98 |

PTB* | -11 | 19 |

NMi-VSL* | 12 | 56 |

UME* | 22 | 83 |

CEM* | 14 | 14 |

INRIM* | 8 | 9 |

OMH* | -10 | 15 |

EIM* | 103 | 152 |

BEV* | 13 | 35 |

SP* | 6 | 75 |

CENAM** | -8 | 20 |

NMIA** | 7 | 20 |

SCL** | -43 | 72 |

NIM** | -6 | 23 |

NMISA** | -82 | 106 |

NIMT** | -142 | 29 |

VMI-STAMEQ** | 44 | 38 |

MUSSD** | -678 | 69 |

* participants in EUROMET.M.FF-K4

** participants in APMP.M.FF-K4

Pair-wise degrees of equivalence involving APMP.M.FF-K4 participants are given on page 18 of the APMP.M.FF-K4 Final Report.

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

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

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.04.04**

Lab i | D_{i} | U_{i} |

/ 10^{-6} | / 10^{-6} | |

CENAM | -5 | 15 |

NRC | 37 | 20 |

SP | 13 | 27 |

INRIM | -21 | 21 |

NMIA | 10 | 19 |

INMETRO | -14 | 17 |

CENAM* | -3 | 22 |

BSJ* | 10601 | 721 |

LACOMET* | 13 | 64 |

CENAMEP AIP* | -15 | 32 |

INDECOPI* | -36 | 72 |

IBMETRO* | 28 | 38 |

LATU* | 26 | 30 |

INTI* | -75 | 63 |

INMETRO* | -16 | 22 |

* 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).

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.13**

Lab i | D_{i} | U_{i} |

/ 10^{-6} | / 10^{-6} | |

CENAM | -11 | 17 |

NRC | 25 | 21 |

SP | -1 | 24 |

INRIM | -16 | 18 |

NMIA | 5 | 18 |

INMETRO | 4 | 13 |

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

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.14**

Lab i | D_{i} | U_{i} |

/ 10^{-6} | / 10^{-6} | |

CENAM | -15 | 20 |

NRC | 39 | 21 |

SP | 18 | 27 |

INRIM | -17 | 20 |

NMIA | 7 | 16 |

INMETRO | -7 | 14 |

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

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.15**

Lab i | D_{i} | U_{i} |

/ 10^{-6} | / 10^{-6} | |

CENAM | -7 | 16 |

NRC | 42 | 23 |

SP | 15 | 27 |

INRIM | -9 | 17 |

NMIA | 4 | 16 |

INMETRO | -11 | 15 |

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

CCM.FF-K4 and APMP.M.FF-K4

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD : TS 03.01.17**

Lab i | D_{i} | U_{i} |

/ 10^{-6} | / 10^{-6} | |

CENAM | -3 | 17 |

NRC | 43 | 22 |

SP | 19 | 30 |

INRIM | -12 | 18 |

NMIA | 3 | 15 |

INMETRO | -20 | 19 |

CENAM* | -7 | 20 |

NMIA* | 7 | 20 |

SCL* | -41 | 72 |

NIM* | 12 | 23 |

NMISA* | 6 | 48 |

NIMT* | -147 | 29 |

VMI-STAMEQ* | 37 | 38 |

MUSSD* | -97 | 66 |

* participants in APMP.M.FF-K4

Pair-wise degrees of equivalence involving APMP.M.FF-K4 participants are given on page 19 of the APMP.M.FF-K4 Final Report.

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

APMP.M.FF-K4.2022

Metrology area, Sub-field | Mass and related quantities, Fluid Flow |

Description | Liquid volume |

Time of measurements | 2022 - 2023 |

Status | Planned |

Measurand | Water volume: 100 ml and 20 L 100mL, 20 L |

Transfer device | A 20L test measure and two 100mL pycnometers |

Comparison type | Key Comparison |

Consultative Committee | CCM (Consultative Committee for Mass and Related Quantities) |

Conducted by | APMP (Asia Pacific Metrology Programme) |

Pilot institute |
NIM
National Institute of Metrology China |

Contact person | Ligong GUO +86 10 6452 4650/4627 |

Additional |

Pilot laboratory | |
---|---|

NIM |
National Institute of Metrology, China, APMP |

IPQ |
Instituto Portugues da Qualidade, Portugal, EURAMET |

MUSSD |
Department of Measurement Units, Standards and Services, Sri Lanka, APMP |

NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |

NIS |
National Institute for Standards, Egypt, AFRIMETS |

NMIA |
National Measurement Institute, Australia, Australia, APMP |

NMIM |
National Metrology Institute of Malaysia, Malaysia, APMP |

NMLPHIL |
National Metrology Laboratory of the Philippines, Philippines, APMP |

NPLI |
CSIR National Physical Laboratory of India, India, APMP |

SASO-NMCC |
National Measurement and Calibration Center - Saudi Standards, Metrology and Quality Organization, Saudi Arabia, GULFMET |

SCL |
Standards and Calibration Laboratory, Hong Kong, China, APMP |

SNSU-BSN |
National Measurement Standard - National Standardization Agency of Indonesia, Indonesia, APMP |

UzNIM |
Uzbek National Institute of Metrology, Uzbekistan, COOMET |

VMI-STAMEQ |
Viet Nam Metrology Institute, Directorate for Standards and Quality, Viet Nam, APMP |

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" :

Results:

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

**Key comparison CCM.FF-K4**

**MEASURAND: VolumeNOMINAL VALUE: 20 LTHREE TRANSFER STANDARDS**

For each of the transfer standards, the key comparison reference value, U is approximately given at a 95% level of confidence. _{R}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 at approximately a 95% level of confidence. U_{i TS}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: and its expanded uncertainty D_{i }U_{i}_{ }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:and its expanded uncertainty D = _{ij}D - _{i}D _{j} at approximately a 95% level of confidence.U_{ij} |

- 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 ** D_{ij}** values given in the Annex 2 of the EURAMET.M.FF-K4.b Final Report correspond to

- 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, EUROMET.M.FF-K4, and APMP.M.FF-K4

**Key comparison CCM.FF-K4**

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.04.03**

The key comparison reference value, , is computed as the median of the results. Its expanded uncertainty x_{R}U is approximately given at a 95% level of confidence. The details are explained in Appendix C of the CCM.FF-K4 Final Report._{R}x_{R }=_{ }99.8942 mL and U_{R} = 0.0012 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:D_{i} = ( and its expanded uncertainty x - _{i}x_{R})/x_{R} at approximately a 95% level of confidence. U_{i} |

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in relative value:and its expanded uncertainty D = _{ij}D - _{i}D _{j}at approximately a 95% level of confidence.U_{ij } |

**Key comparison EUROMET.M.FF-K4**

**MEASURAND: VolumeNOMINAL VALUE: 100 mL**

The EUROMET reference value, , and its expanded uncertainty (x_{R-EUR}k = 2), , are obtained from the weighted average of the EUROMET participants' results that are published here.U_{R-EUR}.x_{R-EUR} = 100.0914 mL and U_{R-EUR} = 0.0006 mL |

The degree of equivalence of laboratory i participant in EUROMET.M.FF-K4 with respect to the EUROMET reference value is given by a pair of terms, both expressed in mL: and its expanded uncertainty (D_{i}_{-EUR} = (x_{i}_{-EUR} - x_{R-EUR})k = 2), , computed as U_{i}_{-EUR}. U_{i}_{-EUR} = 2[u_{i}_{-EUR}^{2} - (U_{R-EUR}/2)^{2}]^{1/2} |

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in mL: and its expanded uncertainty (D = (_{ij}D_{i}_{-EUR} - D_{j}_{-EUR})k = 2), , expressed as U_{ij}.U = 2(_{ij}u_{i}_{-EUR}^{2} + u_{j}_{-EUR}^{2})^{1/2} |

**Linking EUROMET.M.FF-K4 to CCM.FF-K4**

The EUROMET.M.FF-K4 results are linked to those obtained at 100 mL in CCM.FF-K4 with the Transfer standard TS 03.04.03.

The technical protocols and transfer standards of both comparisons are very similar, and INRIM and SP participated in both exercises with comparable performance.

The degrees of equivalence relative to the EUROMET reference value are thus transferred to the key comparison reference value determined in CCM.FF-K4 with slight changes. The resulting values of ** D_{i}**,

**The matrix of equivalence obtained at 100 mL in CCM.FF-K4 with the Transfer standard TS 03.04.03 is thus extended to EUROMET.M.FF-K4 participants (after conversion to relative values)**.

- 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 18 of the APMP.M.FF-K4 Final Report.

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

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.04.04**

**Key comparison CCM.FF-K4**

The key comparison reference value, , is computed as the median of the results. Its expanded uncertainty x_{R}U is approximately given at a 95% level of confidence. The details are explained in Appendix C of the CCM.FF-K4 Final Report._{R}x_{R }=_{ }100.1599 mL and U_{R} = 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:D_{i} = ( and its expanded uncertainty x - _{i}x_{R})/x_{R} at approximately a 95% level of confidence. U_{i} |

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in relative value:and its expanded uncertainty D = _{ij}D - _{i}D _{j}at approximately a 95% level of confidence.U_{ij } |

**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.

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.13**

The key comparison reference value, , is computed as the median of the results. Its expanded uncertainty x_{R}U is approximately given at a 95% level of confidence. The details are explained in Appendix C of the Final Report._{R}x_{R }=_{ }98.6311 mL and U_{R} = 0.0010 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:D_{i} = ( and its expanded uncertainty x - _{i}x_{R})/x_{R} at approximately a 95% level of confidence. U_{i} |

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in relative value:and its expanded uncertainty D = _{ij}D - _{i}D _{j}at approximately a 95% level of confidence.U_{ij } |

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.14**

The key comparison reference value, , is computed as the median of the results. Its expanded uncertainty x_{R}U is approximately given at a 95% level of confidence. The details are explained in Appendix C of the Final Report._{R}x_{R }=_{ }97.7039 mL and U_{R} = 0.0011 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:D_{i} = ( and its expanded uncertainty x - _{i}x_{R})/x_{R} at approximately a 95% level of confidence. U_{i} |

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in relative value:and its expanded uncertainty D = _{ij}D - _{i}D _{j}at approximately a 95% level of confidence.U_{ij } |

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.15**

The key comparison reference value, , is computed as the median of the results. Its expanded uncertainty x_{R}U is approximately given at a 95% level of confidence. The details are explained in Appendix C of the Final Report._{R}x_{R }=_{ }98.3995 mL and U_{R} = 0.0010 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:D_{i} = ( and its expanded uncertainty x - _{i}x_{R})/x_{R} at approximately a 95% level of confidence. U_{i} |

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in relative value:and its expanded uncertainty D = _{ij}D - _{i}D _{j}at approximately a 95% level of confidence.U_{ij } |

CCM.FF-K4 and APMP.M.FF-K4

**Key comparison CCM.FF-K4**

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.17**

The key comparison reference value, , is computed as the median of the results. Its expanded uncertainty x_{R}U is approximately given at a 95% level of confidence. The details are explained in Appendix C of the Final Report._{R}x_{R }=_{ }102.1843 mL and U_{R} = 0.0012 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:D_{i} = ( and its expanded uncertainty x - _{i}x_{R})/x_{R} at approximately a 95% level of confidence. U_{i} |

The degree of equivalence between two laboratories i and j is given by a pair of terms, both expressed in relative value:and its expanded uncertainty D = _{ij}D - _{i}D _{j}at approximately a 95% level of confidence.U_{ij } |

- 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 19 of the APMP.M.FF-K4 Final Report.

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

**MEASURAND: VolumeNOMINAL VALUE: 20 L**

**Key comparison CCM.FF-K4**

** x_{i}** : 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

**TRANSFER STANDARD: TS 710-04**

Lab i |
x/ mL_{i} |
u/ mL_{i} |
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 |
x/ mL_{i} |
u/ mL_{i} |
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 |
x/ mL_{i} |
u/ mL_{i} |
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**

** x_{i-EUR.b}** : volume of water measured by laboratory

Lab i |
x_{i-EUR.b}/ mL |
U_{i-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**

** x_{i-SIM}** : volume of water measured by laboratory

Lab i |
x_{i-SIM}/ mL |
U_{i-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**

** x_{i-APMP}** : volume of water measured by laboratory

Lab i |
x_{i-APMP }/ mL |
U_{i-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 ( |
Oct 06 |

NMISA |
19 991.57 |
2.30 ( |
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 ( |
Jul 07 |

NMIA | 19 992.85 | 0.44 | Jul - Aug 07 |

CCM.FF-K4, EUROMET.M.FF-K4, and APMP.M.FF-K4

**MEASURAND: VolumeNOMINAL VALUE: 100 mL**

TRANSFER STANDARD: TS 03.04.03

** x_{i}** : volume of water the transfer standard contains at a reference temperature of

20 °C, measured by laboratory

Lab i |
x/ mL_{i} |
u/ mL_{i} |
Date of measurement |

CENAM | 99.8935 | 0.00077 | Dec 2003 |

NRC | 99.8978 | 0.00080 | Mar 2004 |

SP | 99.8950 | 0.0016 | Apr 2004 |

INRIM | 99.8930 | 0.00083 | Aug / Oct 2004 |

NMIA | 99.8955 | 0.0011 | Oct / Dec 2004 |

INMETRO | 99.8929 | 0.00061 | Feb 2005 |

**Key comparison EUROMET.M.FF-K4**

** x_{i-EUR}** : volume of water measured by laboratory

Lab i |
x_{i-EUR}/ mL |
u_{i-EUR}/ mL |
Date of measurement |

IPQ | 100.0917 | 0.0012 | Mar 2003 |

CMI | 100.0878 | 0.0028 | Nov 2002 |

LNE | 100.0924 | 0.0007 | Jan 2003 |

FORCE |
100.0918 |
0.0050 |
Feb 2003 |

PTB |
100.0903 |
0.0006 |
Mar 2003 |

NMi-VSL |
100.0926 |
0.0030 |
Apr 2003 |

UME |
100.0936 |
0.0043 |
Jun 2003 |

CEM |
100.0928 |
0.0009 |
Jul 2003 |

INRIM |
100.0922 |
0.0012 |
Sep 2003 |

OMH |
100.0904 |
0.0008 |
Nov 2003 |

EIM | 100.1017 | 0.0077 | Dec 2003 |

BEV | 100.0927 | 0.00205 | Jan 2004 |

SP | 100.0920 | 0.0039 | Mar 2004 |

**Key comparison APMP.M.FF-K4**

**TRANSFER STANDARD : TS 03.04.03**

** x_{i-APMP}** : volume of water measured by laboratory

Lab i |
x_{i-APMP }/ mL |
U_{i-APMP}/ mL |
Date of measurement |

CENAM | 99.4028 | 0.0027 (k = 2.02) |
Jul 06 |

NMIA | 99.4040 | 0.0020 | Jul - Aug 06 |

SCL | 99.3992 | 0.0070 | Aug - Sep 06 |

NIM |
99.4029 |
0.0016 ( |
Oct 06 |

NMISA |
99.3953 |
0.0104 ( |
Nov 06 - Jan 07 |

NIMT |
99.3894 |
0.0024 |
Jan - Feb 07 |

VMI-STAMEQ |
99.4078 |
0.0034 |
Jun 07 |

MUSSD |
99.3360 |
0.0067 |
Jul 07 |

NMIA | 99.4048 | 0.0020 | Jul - Aug 07 |

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

**Key comparison CCM.FF-K4**

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.04.04**

** x_{i}** : volume of water the transfer standard contains at a reference temperature of

20 °C, measured by laboratory

Lab i |
x/ mL_{i} |
u/ mL_{i} |
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: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.04.04**

** x_{i-SIM}** : volume of water measured by laboratory

Lab i |
x_{i-SIM}/ mL |
u_{i-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 |

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.13**

** x_{i}** : volume of water the transfer standard is contains at a reference temperature of

20 °C, measured by laboratory

Lab i |
x/ mL_{i} |
u/ mL_{i} |
Date of measurement |

CENAM | 98.630 0 | 0.000 86 | Dec 2003 |

NRC | 98.633 6 | 0.000 95 | Mar 2004 |

SP | 98.631 0 | 0.001 4 | Apr 2004 |

INRIM | 98.629 5 | 0.000 84 | Aug / Oct 2004 |

NMIA | 98.631 6 | 0.000 98 | Oct / Dec 2004 |

INMETRO | 98.631 5 | 0.000 65 | Feb 2005 |

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.14**

** x_{i}** : volume of water the transfer standard is contains at a reference temperature of

20 °C, measured by laboratory

Lab i |
x/ mL_{i} |
u/ mL_{i} |
Date of measurement |

CENAM | 97.702 4 | 0.000 85 | Dec 2003 |

NRC | 97.707 7 | 0.000 85 | Mar 2004 |

SP | 97.705 6 | 0.001 4 | Apr 2004 |

INRIM | 97.702 2 | 0.000 85 | Aug / Oct 2004 |

NMIA | 97.704 6 | 0.001 0 | Oct / Dec 2004 |

INMETRO | 97.703 2 | 0.000 71 | Feb 2005 |

**MEASURAND: VolumeNOMINAL VALUE: 100 mLTRANSFER STANDARD: TS 03.01.15**

** x_{i}** : volume of water the transfer standard contains at a reference temperature of

20 °C, measured by laboratory

Lab i |
x/ mL_{i} |
u/ mL_{i} |
Date of measurement |

CENAM | 98.398 8 | 0.000 81 | Dec 2003 |

NRC | 98.403 6 | 0.001 0 | Mar 2004 |

SP | 98.401 0 | 0.001 4 | Apr 2004 |

INRIM | 98.398 6 | 0.000 84 | Aug / Oct 2004 |

NMIA | 98.399 9 | 0.000 99 | Oct / Dec 2004 |

INMETRO | 98.398 4 | 0.000 64 | Feb 2005 |

CCM.FF-K4, and APMP.M.FF-K4

**MEASURAND: VolumeNOMINAL VALUE: 100 mL**

**Key comparison CCM.FF-K4**

**TRANSFER STANDARD: TS 03.01.17**

** x_{i}** : volume of water the transfer standard contains at a reference temperature of

20 °C, measured by laboratory

Lab i |
x/ mL_{i} |
u/ mL_{i} |
Date of measurement |

CENAM | 102.1840 | 0.0011 | Dec 2003 |

NRC | 102.1887 | 0.00095 | Mar 2004 |

SP | 102.1862 | 0.0016 | Apr 2004 |

INRIM | 102.1831 | 0.00084 | Aug / Oct 2004 |

NMIA | 102.1846 | 0.00098 | Oct / Dec 2004 |

INMETRO | 102.1823 | 0.00076 | Feb 2005 |

**Key comparison APMP.M.FF-K4**

**TRANSFER STANDARD : TS 03.01.17**

** x_{i-APMP}** : volume of water measured by laboratory

Lab i |
x_{i-APMP }/ mL |
U_{i-APMP}/ mL |
Date of measurement |

CENAM | 100.9309 | 0.0033 (k = 2.02) |
July 2006 |

NMIA | 100.9332 | 0.0021 | Jul - Aug 2006 |

SCL | 100.9283 | 0.0070 | Aug - Sep 2006 |

NIM |
100.9336 |
0.0016 ( |
October 2006 |

NMISA |
100.9330 |
0.0045 ( |
Nov 2006 - Jan 2007 |

NIMT |
100.9177 |
0.0024 |
Jan - Feb 2007 |

VMI-STAMEQ |
100.9361 |
0.0034 |
June 2007 |

MUSSD |
100.9227 |
0.0064 |
July 2007 |

NMIA | 100.9332 | 0.0021 | Jul - Aug 2007 |