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
**MEASURAND : Density of liquids
LIQUID : Water at 20 °C**

Graph of equivalence

**Red diamonds** CCM.D-K2 participants

**Blue diamonds **EURAMET.M.D-K2 participants only

**MEASURAND : Density of liquids
LIQUID :Pentadecane at 20 °C**

Graph of equivalence

**Red diamonds** CCM.D-K2 participants

**Blue diamonds **EURAMET.M.D-K2 participants only

**MEASURAND : Density of liquids
LIQUID : Pentadecane at 15 °C**

Graph of equivalence

**Red diamonds** CCM.D-K2 participants

**Blue diamonds **EURAMET.M.D-K2 participants only

**MEASURAND : Density of liquids
LIQUID : Pentadecane at 40 °C**

Graph of equivalence

**Red diamonds** CCM.D-K2 participants

**Blue diamonds **EURAMET.M.D-K2 participants only

**MEASURAND : Density of liquids
LIQUID :Pentadecane at 60 °C**

Graph of equivalence

**Red diamonds** CCM.D-K2 participants

**Blue diamonds **EURAMET.M.D-K2 participants only

**MEASURAND : Density of liquids
LIQUID : Tetrachloroethylene at 20 °C**

Graph of equivalence

**Red diamonds** CCM.D-K2 participants

**Blue diamonds **EURAMET.M.D-K2 participants only

**MEASURAND : Density of liquids
LIQUID : Tetrachloroethylene at 5 °C**

Graph of equivalence

**Red diamonds** CCM.D-K2 participants

**Blue diamonds **EURAMET.M.D-K2 participants only

**MEASURAND : Density of liquids
LIQUID :Viscosity oil VO-2 at 20 °C**

Graph of equivalence

**Red diamonds** CCM.D-K2 participants

**Blue diamonds **EURAMET.M.D-K2 participants only

**MEASURAND : Density of liquids
LIQUID : Water at 20 °C**

Degrees of equivalence relative to the CCM.D-K2 key comparison reference value:

**Red diamonds** CCM.D-K2 participants

**Blue diamonds** EURAMET.M.D-K2 participants only

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

**MEASURAND : Density of liquids
LIQUID : Pentadecane at 20 °C**

Degrees of equivalence relative to the CCM.D-K2 key comparison reference value:

**Red diamonds** CCM.D-K2 participants

**Blue diamonds** EURAMET.M.D-K2 participants only

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

**MEASURAND : Density of liquids
LIQUID : Pentadecane at 15 °C**

Degrees of equivalence relative to the CCM.D-K2 key comparison reference value:

**Red diamonds** CCM.D-K2 participants

**Blue diamonds** EURAMET.M.D-K2 participants only

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

**MEASURAND : Density of liquids
LIQUID : Pentadecane at 40 °C**

Degrees of equivalence relative to the CCM.D-K2 key comparison reference value:

**Red diamonds** CCM.D-K2 participants

**Blue diamonds** EURAMET.M.D-K2 participants only

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

**MEASURAND : Density of liquids
LIQUID : Pentadecane at 60 °C**

Degrees of equivalence relative to the CCM.D-K2 key comparison reference value:

**Red diamonds** CCM.D-K2 participants

**Blue diamonds** EURAMET.M.D-K2 participants only

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

**MEASURAND : Density of liquids
LIQUID : Tetrachloroethylene at 20 °C**

Degrees of equivalence relative to the CCM.D-K2 key comparison reference value:

**Red diamonds** CCM.D-K2 participants

**Blue diamonds** EURAMET.M.D-K2 participants only

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

**MEASURAND : Density of liquids
LIQUID : Tetrachloroethylene at 5 °C**

Degrees of equivalence relative to the CCM.D-K2 key comparison reference value:

**Red diamonds** CCM.D-K2 participants

**Blue diamonds** EURAMET.M.D-K2 participants only

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

**MEASURAND : Density of liquids
LIQUID : Viscosity oil VO-2 at 20 °C**

Degrees of equivalence relative to the CCM.D-K2 key comparison reference value:

**Red diamonds** CCM.D-K2 participants

**Blue diamonds** EURAMET.M.D-K2 participants only

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

EURAMET.M.D-K2.1

Metrology area, Sub-field | Mass and related quantities, Density |

Description | Density of liquids |

Time of measurements | 2021 |

Status | Measurements in progress |

Measurand | Density 800....1600 kg/m3 |

Parameters | Temperature |

Transfer device | Deuterated ultra-pure water, tetrachloetylene, oil with a high viscosity |

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 1522 |

Comments | Within the framework of EMPIR 17RPT02 rhoLiq, applying hydrostatic weighing techniques. |

Pilot institute |
BEV
Bundesamt für Eich- und Vermessungswesen Austria |

Contact person | Lukas Prochaska |

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

BEV |
Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET |

CMI |
Czech Metrology Institute, Czechia, EURAMET |

DMDM |
Directorate of Measures and Precious Metals, Serbia, EURAMET |

GUM |
Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET |

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

INM |
National Institute of Metrology, Romania, EURAMET |

IPQ |
Instituto Portugues da Qualidade, Portugal, EURAMET |

JV |
Justervesenet, Norway, EURAMET |

NMI (MD) |
The National Metrology Institute of the Republic of Moldova, Moldova, Republic of, EURAMET |

PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |

UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET |

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:

**MEASURAND : Density of liquids
LIQUID : Water at 20 °C**

The key comparison reference value, ** x_{R}** , and associated expanded uncertainty at a 95% level of confidence,

The key comparison reference value is computed by a Monte Carlo method using the median. The distribution is usually non-symmetric and the confidence interval may not be equally spaced around the reference value.

** x_{R}** = 998.3220 kg/m

In Procedure B, the degree of equivalence, , of laboratory D_{i} with respect to the key comparison reference value is calculated by the Monte Carlo method described in iMetrologia, 2012, 39, 589-595. |

**MEASURAND : Density of liquids
LIQUID : Pentadecane at 20 °C**

The key comparison reference value, ** x_{R}** , and associated expanded uncertainty at a 95% level of confidence,

** x_{R}** = 768.5652 kg/m

The degree of equivalence, , of laboratory D_{i} with respect to the key comparison reference value is calculated as the offset to i together with its expanded uncertainty x_{R}, where U = 2(_{i}u_{i}^{2} – u_{R}^{2})^{1/2} and u_{i} are the standard uncertainties of the laboratory result and of the key comparison reference value, respectively. u_{R} |

**MEASURAND : Density of liquids LIQUID : Pentadecane at 15 °C**

The key comparison reference value, ** x_{R}** , and associated expanded uncertainty at a 95% level of confidence,

The key comparison reference value is computed by a Monte Carlo method using the median. The distribution is usually non-symmetric and the confidence interval may not be equally spaced around the reference value.

** x_{R}** = 772.0696kg/m

In Procedure B, the degree of equivalence, , of laboratory D_{i} with respect to the key comparison reference value is calculated by the Monte Carlo method described in iMetrologia, 2012, 39, 589-595. |

**MEASURAND : Density of liquids LIQUID : Pentadecane at 40 °C**

The key comparison reference value, ** x_{R}** , and associated expanded uncertainty at a 95% level of confidence,

** x_{R}** = 754.5871 kg/m

The degree of equivalence, , of laboratory D_{i} with respect to the key comparison reference value is calculated as the offset to i together with its expanded uncertainty x_{R}, where U = 2(_{i}u_{i}^{2} – u_{R}^{2})^{1/2} and u_{i} are the standard uncertainties of the laboratory result and of the key comparison reference value, respectively. u_{R} |

**MEASURAND : Density of liquids LIQUID : Pentadecane at 60 °C**

The key comparison reference value, ** x_{R}** , and associated expanded uncertainty at a 95% level of confidence,

** x_{R}** = 740.6078 kg/m

The degree of equivalence, , of laboratory D_{i} with respect to the key comparison reference value is calculated as the offset to i together with its expanded uncertainty x_{R}, where U = 2(_{i}u_{i}^{2} – u_{R}^{2})^{1/2} and u_{i} are the standard uncertainties of the laboratory result and of the key comparison reference value, respectively. u_{R} |

**MEASURAND : Density of liquids LIQUID : Tetrachloroethylene at 20 °C**

** x_{R}** , and associated expanded uncertainty at a 95% level of confidence,

** x_{R}** = 1622.7252 kg/m

The degree of equivalence, , of laboratory D_{i} with respect to the key comparison reference value is calculated as the offset to i together with its expanded uncertainty x_{R}, where U = 2(_{i}u_{i}^{2} – u_{R}^{2})^{1/2} and u_{i} are the standard uncertainties of the laboratory result and of the key comparison reference value, respectively. u_{R} |

**MEASURAND : Density of liquids LIQUID : Tetrachloroethylene at 5 °C**

** x_{R}** , and associated expanded uncertainty at a 95% level of confidence,

** x_{R}** = 1647.5491 kg/m

The degree of equivalence, , of laboratory D_{i} with respect to the key comparison reference value is calculated as the offset to i together with its expanded uncertainty x_{R}, where U = 2(_{i}u_{i}^{2} – u_{R}^{2})^{1/2} and u_{i} are the standard uncertainties of the laboratory result and of the key comparison reference value, respectively. u_{R} |

**MEASURAND : Density of liquids LIQUID : Viscosity oil VO-2 at 20 °C**

** x_{R}** , and associated expanded uncertainty at a 95% level of confidence,

** x_{R}** = 845.6817 kg/m

The degree of equivalence, , of laboratory D_{i} with respect to the key comparison reference value is calculated as the offset to i together with its expanded uncertainty x_{R}, where U = 2(_{i}u_{i}^{2} – u_{R}^{2})^{1/2} and u_{i} are the standard uncertainties of the laboratory result and of the key comparison reference value, respectively. u_{R} |

**MEASURAND : Density of liquids LIQUID : Water at 20 °C**

Measurements were carried from 27 April 2004 to 28 June 2004.

The results of the participants are given in Section 5 of the CCM.D-K2 Final Report (see Table 9).

**MEASURAND : Density of liquids LIQUID : Pentadecane at 20 °C**

Measurements were carried from 27 April 2004 to 28 June 2004.

The results of the participants are given in Section 5 of the CCM.D-K2 Final Report (see Tables 10 and 11).

**MEASURAND : Density of liquids LIQUID : Pentadecane at 15 °C**

Measurements were carried from 27 April 2004 to 28 June 2004.

The results of the participants are given in Section 5 of the CCM.D-K2 Final Report (see Table 12).

**MEASURAND : Density of liquids LIQUID : Pentadecane at 40 °C**

Measurements were carried from 27 April 2004 to 28 June 2004.

The results of the participants are given in Section 5 of the CCM.D-K2 Final Report (see Table 13).

**MEASURAND : Density of liquids LIQUID : Pentadecane at 60 °C**

Measurements were carried from 27 April 2004 to 28 June 2004.

The results of the participants are given in Section 5 of the CCM.D-K2 Final Report (see Table 14).

**MEASURAND : Density of liquids LIQUID : Tetrachloroethylene at 20 °C**

Measurements were carried from 27 April 2004 to 28 June 2004.

The results of the participants are given in Section 5 of the CCM.D-K2 Final Report (see Table 15).

**MEASURAND : Density of liquids LIQUID : Tetrachloroethylene at 5 °C**

Measurements were carried from 27 April 2004 to 28 June 2004.

The results of the participants are given in Section 5 of the CCM.D-K2 Final Report (see Table 16).

**MEASURAND : Density of liquids LIQUID : Viscosity oil VO-2 at 20 °C**

Measurements were carried from 27 April 2004 to 28 June 2004.

The results of the participants are given in Section 5 of the CCM.D-K2 Final Report (see Table 17).