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CIPM MRA PARTICIPANTS
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In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a 2 + b 2]1/2
Unless otherwise stated the expanded uncertainties given below correspond to k = 2 (at a 95 % level of confidence)
Hungary, BFKH (Government Office of the Capital City Budapest)
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous buffer solution of potassium hydrogen phtalate 3.8 to 4.2 7.0E-3 3.8 to 4.2 7.0E-3
  • Mechanism for measurement service delivery : CRM MKEH 2.2.3
  • Measurement temperature 15 °C to 50 °C, data given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention
  • Approved on 19 June 2014
  • Institute service identifier : 2.2.3
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in S/m Absolute expanded uncertainty in % Electrolytic conductivity in Absolute expanded uncertainty in
aqueous solution 1.00E-4 to 2.00E-3 2 to 0.5
  • Mechanism for measurement service delivery : Calibration
  • Temperature range: 15 °C to 35 °C
  • Approved on 06 December 2011
  • Institute service identifier : 2.3.1
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in S/m Absolute expanded uncertainty in % Electrolytic conductivity in Absolute expanded uncertainty in
aqueous solution 0.015 to 0.1 0.2 to 5.0E-2
  • Mechanism for measurement service delivery : Calibration
  • Temperature range: 15 °C to 35 °C
  • Approved on 06 December 2011
  • Institute service identifier : 2.3.3
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous buffer solution of potassium tetraoxalate 1.6 to 1.8 1.0E-2 1.6 to 1.8 1.0E-2
  • Mechanism for measurement service delivery : CRM MKEH 2.2.1
  • Measurement temperature 15 °C to 50 °C, data given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention
  • Approved on 19 June 2014
  • Institute service identifier : 2.2.1
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous buffer solution of sodium tetraborate 9.1 to 9.2 1.0E-2 9.18 1.0E-2
  • Mechanism for measurement service delivery : CRM MKEH 2.2.6
  • Measurement temperature 15 °C to 50 °C, data given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention
  • Approved on 06 December 2011
  • Institute service identifier : 2.2.6
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in S/m Relative expanded uncertainty in % Electrolytic conductivity in S/m Relative expanded uncertainty in %
aqueous solution 2.00E-3 to 0.015 0.5 to 0.1 2.00E-3 to 0.015 0.5 to 0.1
  • Mechanism for measurement service delivery : CRM MKEH 2.3.2 plus calibration
  • Temperature range: 15 °C to 35 °C
  • Approved on 06 December 2011
  • Institute service identifier : 2.3.2
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
Aqueous buffer solution of sodium hydrogen carbonate + sodium carbonate 9.5 to 10.5 5.0E-3 9.5 to 10.5 5.0E-3
  • Mechanism for measurement service delivery : CRM BFKH 2.2.7
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. Measurement data given for 25 °C.
  • Approved on 15 October 2019
  • Institute service identifier : 2.2.7
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in S/m Relative expanded uncertainty in % Electrolytic conductivity in S/m Relative expanded uncertainty in %
aqueous solution 0.1 to 11.5 5.0E-2 0.1408 to 11.13 0.1
  • Mechanism for measurement service delivery : CRM MKEH 2.3.4 plus calibration
  • Temperature range: 15 °C to 35 °C
  • Approved on 06 December 2011
  • Institute service identifier : 2.3.4
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous buffer solution of disodium hydrogen phosphate + potassium dihydrogen phosphate 6.8 to 7.5 6.0E-3 to 7.0E-3 6.8 to 7.5 8.0E-3
  • Mechanism for measurement service delivery : Primary measurement of phosphate buffer
  • Measurement temperature 15 °C to 37 °C, data given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention.
  • Approved on 04 April 2022
  • Institute service identifier : 2.2.4 and 2.2.5
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
synthetic natural gas carbon dioxide 1 to 50 0.4 1 to 50 0.4
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 19 June 2014
  • Institute service identifier : 139/NG
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
nitrogen carbon dioxide 10 to 200 0.18 10 to 200 0.18
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 22 October 2020
  • Institute service identifier : 1323/N
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
nitrogen carbon dioxide 60 to 140 0.59 60 to 140 0.59
nitrogen carbon monoxide 5 to 35 0.5 5 to 35 0.5
nitrogen propane 0.1 to 2 0.84 0.1 to 2 0.84
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 22 October 2020
  • Institute service identifier : 138/EG
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount -of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount -of-substance fraction in mmol/mol Relative expanded uncertainty in %
nitrogen or air carbon-dioxide 0.8 to 10 0.36 0.8 to 10 0.36
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 22 October 2020
  • Institute service identifier : 1321/N
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount -of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount -of-substance fraction in mmol/mol Relative expanded uncertainty in %
nitrogen or air carbon-monoxide 0.1 to 100 1.1 0.1 to 100 1.1
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 22 October 2020
  • Institute service identifier : 131/N
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
synthetic natural gas ethane 10 to 200 0.14 10 to 200 0.14
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 19 June 2014
  • Institute service identifier : 139/NG
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in µmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in µmol/mol Relative expanded uncertainty in %
nitrogen ethanol 50 to 500 1 50 to 500 1
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 08 July 2015
  • Institute service identifier : 1351/N
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in µmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in µmol/mol Relative expanded uncertainty in %
air ethanol 50 to 500 1 50 to 500 1
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 08 July 2015
  • Institute service identifier : 1351/A
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
synthetic natural gas i-butane 0.5 to 15 0.35 0.5 to 15 0.35
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 19 June 2014
  • Institute service identifier : 139/NG
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
synthetic natural gas methane 700 to 980 2.0E-2 700 to 980 2.0E-2
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 19 June 2014
  • Institute service identifier : 139/NG
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
synthetic natural gas n-butane 0.5 to 15 0.4 0.5 to 15 0.4
  • Mechanism for measurement service delivery : CRM/Calibration
  • Approved on 19 June 2014
  • Institute service identifier : 139/NG

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