CCM.D-K2, EURAMET.M.D-K2, EURAMET.M.D-K2.1 and EURAMET.M.D-K2.2

MEASURAND: Density of liquids

           LIQUID:  Water at 20 °C

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kg m-3.

Deuterated water at 20 °C
Di / kg m-3
Participating institutes
CCM.D-K2
EURAMET.M.D-K2
EURAMET.M.D-K2.1
EURAMET.M.D-K2.2

Enlarged graph

Graph_H20@20°C

CCM.D-K2, EURAMET.M.D-K2, EURAMET.M.D-K2.1 and EURAMET.M.D-K2.2

MEASURAND: Density of liquids

           LIQUID:  Water at 20 °C

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kg m-3.

LABi Di Uneg,i Upos,i
kg m-3
kg m-3
kg m-3
NRC -0.0105 0.0149 0.0126
PTB 0.0045 0.0045 0.0040
MKEH -0.0012 0.0058 0.0045
NMIJ 0.0020 0.0137 0.0140
KRISS -0.0050 0.0050 0.0050
CENAM 0.000 0.0051 0.0050
VNIIM 0.0125 0.0069 0.0072
BEV 0.0025 0.0053 0.0053
CEM -0.1040 0.0540 0.0540
GUM 0.0016 0.0046 0.0046
INM 0.0349 0.0119 0.0119
INRiM 0.0132 0.0058 0.0058
IPQ 1 -0.8770 0.0690 0.0690
IPQ 2 -0.0298 0.0345 0.0345
LNE -0.0096 0.0093 0.0093
MIKES 0.0030 0.0076 0.0076
NPL 0.0034 0.0069 0.0069
SMU 0.0110 0.0127 0.0127
UME 0.0168 0.0111 0.0111
INM 0.0131 0.0096 0.0096
CMI 0.008 0.023 0.023
DMDM -0.002 0.011 0.011
GUM -0.011 0.016 0.016
IMBIH 0.009 0.013 0.013
IPQ 0.0104 0.0087 0.0087
JV -0.029 0.081 0.081
UME 0.007 0.011 0.011
INM -0.009 0.032 0.032
CMI -0.001 0.027 0.027
DMDM -0.015 0.050 0.05
GUM -0.004 0.012 0.012
IMBIH 0.021 0.019 0.019
IPQ -0.007 0.025 0.025
NMI (MD) 0.008 0.037 0.037
UME -0.015 0.023 0.023
Participating institutes
CCM.D-K2
EURAMET.M.D-K2
EURAMET.M.D-K2.1
EURAMET.M.D-K2.2
Comparison
Comparison close
CC comparison
Linked comparison
EURAMET.M.D-K2
Metrology area, Sub-field Mass and related quantities, Density
Description Density of liquids
Time of measurements 2008 - 2009
Status Approved for equivalence
Final Reports of the comparisons
Measurand Density: 700 kg/m3 to 1650 kg/m3
Parameters Temperature: 5 °C to 60 °C
Atmospheric pressure
Transfer device Water, pentadecane, tetrachloroethylene and high-viscosity oil samples
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 1019
Comments

Results published on 30 October 2015

EURAMET.M.D-K2 results are linked to those of CCM.D-K2

Density of liquids

Pilot institute BEV
Bundesamt für Eich- und Vermessungswesen
Austria
Contact person Christian BUCHNER

+43 1 21 110 6361
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
BEV

Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET

CEM

Centro Español de Metrologia, Spain, EURAMET

DZM

State Office for Metrology, Croatia, EURAMET

GUM

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

INM

National Institute of Metrology, Romania, EURAMET

INRIM

Istituto Nazionale di Ricerca Metrologica, Italy, EURAMET

IPQ

Instituto Portugues da Qualidade, Portugal, EURAMET

JV

Justervesenet, Norway, EURAMET

LNE

Laboratoire national de métrologie et d'essais, France, EURAMET

MIKES

VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus, Finland, EURAMET

MKEH

Hungarian Trade Licensing Office; now BFKH, Hungary, EURAMET

NPL

National Physical Laboratory, United Kingdom, EURAMET

PTB

Physikalisch-Technische Bundesanstalt, Germany, EURAMET

SMU

Slovensky Metrologicky Ustav, Slovakia, EURAMET

UME

TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET

CCM.D-K2, EURAMET.M.D-K2, EURAMET.M.D-K2.1 and EURAMET.M.D-K2.2

MEASURAND: Density of liquids

           LIQUID:  Water at 20 °C

 

CCM.D-K2

The key comparison reference value xR and its associated expanded uncertainty at a 95% level of confidence, UR are calculated according to section 5 of the CCM.D-K2 Final Report, where 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.

        xR = 998.3220 kg/m3     UR lower = 0.0038 kg/m3  and  UR upper = 0.0038 kg/m3

The degree of equivalence of laboratory i relative to the key comparison reference value xR is given by a pair of terms, both expressed in kg/m3:

Di and its expanded uncertainty Ui at a 95 % level of confidence are calculated by the Monte Carlo method according to section 8 of the CCM.D-K2 Final Report.

 

Linking EURAMET.M.D-K2 to CCM.D-K2

The PTB and MKEH provides the link between the key comparison CCM.D-K2 and EURAMET.M.D-K2, having participated in both comparisons. The linking process is described in Section 4 of the EURAMET.M.D-K2 Final Report.

 

Linking EURAMET.M.D-K2.1 to CCM.D-K2

The BEV and PTB provide the link between the key comparison CCM.D-K2 and EURAMET.M.D-K2.1. BEV's results are linked to CCM.D-K2 through its participation in EURAMET.M.D-K2, while PTB participated in CCM.D-K2 and provided the link for EURAMET.M.D-K2. The linking process is described in Section 5.2 of the EURAMET.M.D-K2.1 Final Report.

 

Linking EURAMET.M.D-K2.2 to CCM.D-K2

The BEV and PTB provide the link between the key comparison CCM.D-K2 and EURAMET.M.D-K2.2. BEV's results are linked to CCM.D-K2 through its participation in EURAMET.M.D-K2, while PTB participated in CCM.D-K2 and provided the link for EURAMET.M.D-K2. The linking process is described in Section 5.2 of the EURAMET.M.D-K2.2 Final Report.

CCM.D-K2, EURAMET.M.D-K2, EURAMET.M.D-K2.1 and EURAMET.M.D-K2.2

MEASURAND: Density of liquids

           LIQUID:  Water at 20 °C

 

CCM.D-K2

xi   measured value submitted by laboratory iLabi

Ui   expanded uncertainty of xi at 95 % level of confidence

Measurements were carried out in 2004.

  Labi xi Ui
  kg m-3 kg m-3
  NRC* 998.3122 0.0149
  PTB 998.3260 0.0025
  OMH* 998.3215 0.0049
  NMIJ 998.3235 0.0151
  KRISS 998.3165 0.0042
  CENAM 998.3215 0.0046
  VNIIM 998.3340 0.0060

*The results shown are corrected values (see Section 5 of the CCM.D-K2 Final Report ).

 

EURAMET.M.D-K2

xi   measured value submitted by laboratory iLabi

Ui   expanded uncertainty of xi at 95 % level of confidence

Measurements were carried out in 2008.

  Labi xi Ui
  kg m-3 kg m-3
  BEV 998.5215 0.0035
  CEM 998.4151 0.0536
  GUM 998.5206 0.0021
  INM 998.5539 0.0112
  INRIM 998.5322 0.0042
  IPQ 1 997.6420 0.0686
  IPQ 2 998.4891 0.0343
  LNE 998.5094 0.0084
  MIKES 998.5220 0.0064
  MKEH 998.5235 0.0047
  NPL 998.5224 0.0055
  PTB 998.5207 0.0031
  SMU 998.5300 0.0120
  UME 998.5358 0.0103

 

 

EURAMET.M.D-K2.1 

xi   measured value submitted by laboratory iLabi

Ui   expanded uncertainty of xi at 95 % level of confidence

Measurements were carried out in 2021.

Density determined by hydrostatic weighing.

  Labi xi Ui
  kg m-3 kg m-3
  BEV 998.425 0.011
  INM 998.4336 0.0070
  CMI 998.428 0.022
  DMDM 998.4188 0.0084
  GUM 998.410 0.015
  IMBIH 998.429 0.012
  IPQ 998.4309 0.0056
  JV 998.392 0.080
  PTB 998.4240 0.0081
  UME 998.4275 0.0082

IPQ submitted corrected results.

 

EURAMET.M.D-K2.2

xi   measured value submitted by laboratory iLabi

Ui   expanded uncertainty of xi at 95 % level of confidence

Measurements were carried out in 2021.

Density determined by oscillation type density meters.

  Labi xi Ui
  kg m-3 kg m-3
  BEV 998.4300 0.0039
  INM 998.420 0.015
  CMI 998.428 0.013
  DMDM 998.414 0.025
  GUM 998.4252 0.0028
  IMBIH 998.450 0.008
  IPQ 998.422 0.012
  NMI (MD) 998.437 0.018
  JV - -
  PTB 998.428 0.006
  UME 998.414 0.011

- Did not deliver data

IPQ submitted corrected results.

IMBIH submitted two sets of results. Results corresponding to density meter DMA5000 are published here.

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