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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)
France, LNE (Laboratoire national de métrologie et d'essais)
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 pH buffer solution 8.8 to 9.5 3.0E-3 8.8 to 9.5 4.0E-3
  • Mechanism for measurement service delivery : CRM LNE pH9
  • pH determined at 15 °C, 25 °C and 37 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. The values are given for a temperature of 25 °C
  • Approved on 28 June 2016
  • Institute service identifier : CMI-37-200-04
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in S/m Absolute expanded uncertainty in S/m Electrolytic conductivity in Absolute expanded uncertainty in
aqueous solution 0.15 to 1.5 6.0E-4 to 6.0E-3
  • Mechanism for measurement service delivery : Calibration of reference solutions
  • Temperature range 25 °C
  • Approved on 28 June 2018
  • Institute service identifier : CMI-37-2006
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in
aqueous pH buffer solution 9.5 to 10.5 4.0E-3
  • Mechanism for measurement service delivery : Primary measurement of carbonate buffer
  • Temperature range 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 15 October 2019
  • Institute service identifier : CMI-37-200-03
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 pH buffer solution 3.5 to 4.5 5.0E-3 3.5 to 4.5 5.0E-3
  • Mechanism for measurement service delivery : CRM LNE pH4
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. The values are given for a temperature of 25 °C
  • Approved on 06 December 2011
  • Institute service identifier : CMI-37-200-01
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 pH buffer solution 6.5 to 7.5 5.0E-3 6.5 to 7.5 5.0E-3
  • Mechanism for measurement service delivery : CRM LNE pH7
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. The values are given for a temperature of 25 °C
  • Approved on 06 December 2011
  • Institute service identifier : CMI-37-200-02
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in mS/m Absolute expanded uncertainty in mS/m Electrolytic conductivity in Absolute expanded uncertainty in
aqueous solution 1.5 to 15 4.0E-3 to 4.0E-2
  • Mechanism for measurement service delivery : Calibration of reference solutions
  • Temperature range 25 °C
  • Approved on 28 June 2018
  • Institute service identifier : CMI-37-2005
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in ng/kg Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
water 17alpha-ethynylestradiol 10 to 50 1.0E1 to 5.0E1
  • Mechanism for measurement service delivery : Calibration and reference measurement service
  • Pharmaceuticals. Pharmaceuticals
  • Approved on 27 March 2013
  • Institute service identifier : CMI-37-300-43
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in ng/kg Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
water 17beta-estradiol 10 to 50 1.0E1 to 3.5E1
  • Mechanism for measurement service delivery : Calibration and reference measurement service
  • Pharmaceuticals. Pharmaceuticals
  • Approved on 27 March 2013
  • Institute service identifier : CMI-37-300-44
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Relative expanded uncertainty in % Mass fraction in
multicomponent organic solution acenaphthene 0.1 to 100 2.0E1 to 2
  • Mechanism for measurement service delivery : Calibration
  • Approved on 22 October 2020
  • Institute service identifier : CMI-37-300-1
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Relative expanded uncertainty in % Mass fraction in
multicomponent organic solution acenaphthylene 0.1 to 100 2.0E1 to 2
  • Mechanism for measurement service delivery : Calibration
  • Approved on 22 October 2020
  • Institute service identifier : CMI-37-300-2
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Relative expanded uncertainty in % Mass fraction in
multicomponent organic solution anthracene 0.1 to 100 2.0E1 to 2
  • Mechanism for measurement service delivery : Calibration
  • Approved on 22 October 2020
  • Institute service identifier : CMI-37-300-3
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
solid food (fish tissue) arsenic 1 to 50 5 to 1.0E1
  • Mechanism for measurement service delivery : Calibration
  • Approved on 08 July 2015
  • Institute service identifier : CMI-37-102-12
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Relative expanded uncertainty in % Mass fraction in µg Relative expanded uncertainty in %
atmospheric particles arsenic 10 to 100 1.3E1 0.47 1.3E1
  • Mechanism for measurement service delivery : Reference value assignement and CRM providing (CRM SL-MR-2-PSF-01)
  • The uncertainty is per filetr
  • Approved on 30 June 2017
  • Institute service identifier : CMI-37-104-11
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/kg Relative expanded uncertainty in % Mass fraction in % Absolute expanded uncertainty in %
animal tissues arsenic 5 to 1000 1.2E1 to 1.5E1
  • Mechanism for measurement service delivery : Provision of reference values
  • Approved on 16 June 2021
  • Institute service identifier : LNE-37-10-04
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
herb arsenic 1 to 50 5 to 1.0E1
  • Mechanism for measurement service delivery : Calibration
  • Approved on 28 June 2016
  • Institute service identifier : CMI-37-106-5
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Relative expanded uncertainty in % Mass fraction in
acetonitrile atrazine 0.1 to 10 2 to 3.5
  • Mechanism for measurement service delivery : calibration Reference value provision
  • Approved on 22 October 2020
  • Institute service identifier : CMI-37-300-21
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 %
synthetic air benzene 1 to 100 2 to 1 1 to 100 0.3 to 0.2
  • Mechanism for measurement service delivery : Provision of gravimetric gas mixtures
  • Approved on 01 March 2005
  • Institute service identifier : CMI-37-28
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 benzene 1 to 100 2 to 1 1 to 100 0.3 to 0.2
  • Mechanism for measurement service delivery : Provision of gravimetric gas mixtures
  • Approved on 01 March 2005
  • Institute service identifier : CMI-37-29
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty in % Amount-of-substance fraction in Absolute expanded uncertainty in
nitrogen benzene 1 to 100 2 to 0.7
  • Mechanism for measurement service delivery : Instrument calibration and calibration of gas standards
  • Approved on 06 December 2011
  • Institute service identifier : CMI-37-22-rev
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty in % Amount-of-substance fraction in Absolute expanded uncertainty in
air benzene 1 to 100 2 to 0.7
  • Mechanism for measurement service delivery : Instrument calibration and calibration of gas standards
  • Approved on 06 December 2011
  • Institute service identifier : CMI-37-23-rev

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