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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)
Czechia, CMI (Czech Metrology Institute)
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 1.50E-3 to 0.015 1.7 to 0.23 5.00E-3 to 0.015 1.7 to 0.23
  • Mechanism for measurement service delivery : Calibration and CMI CRM k43-k45: aqueous solution of KCl
  • Temperature range 15 °C to 30 °C
  • Approved on 28 June 2018
  • Institute service identifier : 6016 kon1
  • CMC ID : EURAMET-QM-CZ-000001PL-1
     
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 0.015 to 0.15 0.62 to 0.19 0.015 to 0.15 0.64 to 0.19
  • Mechanism for measurement service delivery : Calibration and CRM: aqueous solution of KCl
  • Temperature range 15 °C to 30 °C
  • Approved on 08 July 2015
  • Institute service identifier : 6016 kon2
  • CMC ID : EURAMET-QM-CZ-000001PM-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 pH buffer solution 9.8 to 10.2 4.0E-3 9.8 to 10.2 7.0E-3
  • Mechanism for measurement service delivery : CMI CRM p110
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. Measurement temperature 10 °C to 50 °C, data given for 25 °C
  • Approved on 06 December 2011
  • Institute service identifier : 6016 pH2
  • CMC ID : EURAMET-QM-CZ-000004OF-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 pH buffer solution 8.5 to 9.5 4.0E-3 8.5 to 9.5 7.0E-3
  • Mechanism for measurement service delivery : CMI CRM p190
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. Measurement temperature 10 °C to 50 °C, data given for 25 °C
  • Approved on 28 June 2018
  • Institute service identifier : 6016 pH4
  • CMC ID : EURAMET-QM-CZ-000004OJ-1
     
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in µS/cm Relative expanded uncertainty in % Electrolytic conductivity in µS/cm Relative expanded uncertainty in %
aqueous solution (KCl or NaCl) 0.15 to 1.5 0.39 to 0.4
  • Mechanism for measurement service delivery : Determination of electrolytic conductivity value using primary standard.
  • Reference temperature of 25°C.
  • Approved on 22 June 2021
  • Institute service identifier : 616-Con-0.15
  • CMC ID : EURAMET-QM-CZ-00000M6I-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 pH buffer solution 1.5 to 1.9 5.0E-3 1.5 to 1.9 7.0E-3
  • Mechanism for measurement service delivery : CMI CRM p120
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. Measurement temperature 10 °C to 50 °C, data given for 25 °C
  • Approved on 06 December 2011
  • Institute service identifier : 6016 pH1
  • CMC ID : EURAMET-QM-CZ-000004OE-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 pH buffer solution 3.8 to 4.2 7.0E-3 3.8 to 4.2 8.0E-3
  • Mechanism for measurement service delivery : CMI CRM p140
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. Measurement temperature 10 °C to 50 °C, data given for 25 °C
  • Approved on 28 June 2018
  • Institute service identifier : 6016 pH2
  • CMC ID : EURAMET-QM-CZ-000004OH-1
     
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in µS/cm Relative expanded uncertainty in % Electrolytic conductivity in µS/cm Relative expanded uncertainty in %
aqueous solution (KCl or NaCl) 0.05 to 0.15 0.73 to 0.39
  • Mechanism for measurement service delivery : Determination of electrolytic conductivity value using primary standard.
  • Reference temperature of 25°C.
     
  • Approved on 22 June 2021
  • Institute service identifier : 616-Con-0.05
  • CMC ID : EURAMET-QM-CZ-00000M6H-1
     
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in µS/cm Relative expanded uncertainty in % Electrolytic conductivity in µS/cm Relative expanded uncertainty in %
aqueous solution (KCl or NaCl) 1.5 to 15 0.4 to 1.8
  • Mechanism for measurement service delivery : Determination of electrolytic conductivity value using primary standard.
  • Reference temperature of 25°C.
  • Approved on 22 June 2021
  • Institute service identifier : 616-Con-1.5
  • CMC ID : EURAMET-QM-CZ-00000M6J-1
     
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in µS/cm Relative expanded uncertainty in % Electrolytic conductivity in µS/cm Relative expanded uncertainty in %
aqueous solution (KCl or NaCl) 15 to 150 1.8
  • Mechanism for measurement service delivery : Determination of electrolytic conductivity value using primary standard.
  • Reference temperature of 25°C.
  • Approved on 22 June 2021
  • Institute service identifier : 616-Con-15
  • CMC ID : EURAMET-QM-CZ-00000M6K-1
     
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 0.15 to 1.5 0.1 0.15 to 1.5 0.1
  • Mechanism for measurement service delivery : Calibration and CMI CRM k33-k37: aqueous solution of KCl
  • Temperature range 15 °C to 30 °C
  • Approved on 28 June 2018
  • Institute service identifier : 6016 kon3
  • CMC ID : EURAMET-QM-CZ-000001PN-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 pH buffer solution 6.8 to 7.5 4.0E-3 6.8 to 7.5 5.0E-3
  • Mechanism for measurement service delivery : CMI CRM p170
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. Measurement temperature 10 °C to 50 °C, data given for 25 °C
  • Approved on 28 June 2018
  • Institute service identifier : 6016 pH3
  • CMC ID : EURAMET-QM-CZ-000004OI-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 pH buffer solution 9 to 9.4 4.0E-3 9 to 9.4 7.0E-3
  • Mechanism for measurement service delivery : CMI CRM p190
  • Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. Measurement temperature 10 °C to 50 °C, data given for 25 °C
  • Approved on 08 July 2015
  • Institute service identifier : 6016 pH2
  • CMC ID : EURAMET-QM-CZ-000004OG-1
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in % Relative expanded uncertainty in % Mass fraction in % Absolute expanded uncertainty in %
high purity sodium carbonate base expressed as sodium carbonate 99.8 to 100 6.8E-2
  • Mechanism for measurement service delivery : Calibration service
  • Approved on 01 September 2023
  • Institute service identifier : 616-Coul-C004
  • CMC ID : EURAMET-QM-CZ-00000OHV-1
     
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 0.2 to 200 1.2 to 0.21 0.2 to 200 1.2 to 0.21
synthetic natural gas ethane 2 to 250 0.65 2 to 250 0.65
synthetic natural gas helium 0.5 to 25 0.87 0.5 to 25 0.87
synthetic natural gas hexane 0.1 to 2.5 0.74 0.1 to 2.5 0.74
synthetic natural gas hydrogen 5 to 100 0.73 5 to 100 0.73
synthetic natural gas isobutane 0.5 to 15 0.69 0.5 to 15 0.69
synthetic natural gas isopentane 0.1 to 2.5 2.1 0.1 to 2.5 2.1
synthetic natural gas methane 500 to 999 4.0E-2 500 to 999 4.0E-2
synthetic natural gas n-butane 0.5 to 15 0.73 0.5 to 15 0.73
synthetic natural gas n-pentane 0.1 to 2.5 1.5 0.1 to 2.5 1.5
synthetic natural gas neo-pentane 0.1 to 2.5 1.1 0.1 to 2.5 1.1
synthetic natural gas nitrogen 1 to 250 5.7 to 0.18 1 to 250 5.7 to 0.18
synthetic natural gas propane 0.5 to 120 0.64 0.5 to 120 0.64
  • Uncertainty table CMC
    {"row_1":{"col_1":"For x ≤ 0.5 cmol mol<sup><sub>−1</sub></sup>, the relative expanded uncertainty is:","col_2":"<br data-cke-eol=\"1\">lg&nbsp;<em>u</em><sub>CMC</sub>&nbsp;= a<sub>0</sub>&nbsp;+ a<sub>1</sub>&nbsp;lg&nbsp;<em>x</em><br type=\"_moz\">"},"row_2":{"col_1":"For x ≥ 0.5 cmol mol<sup>−1</sup>, the relative expanded uncertainty is:","col_2":"0.21"}}
    where x denotes the amount fraction carbon dioxide and uCMC the supported relative standard uncertainty. The relative expanded uncertainty UCMC = (k uCMC)/x.
    a0 = -4.1926
    a1 = 0.4726
  • Uncertainty equation CMC : lg uCMC = a0 + a1 lg x
    a0 = -4.1926
    a1 = 0.4726 where x denotes the amount fraction carbon dioxide and uCMC the supported relative standard uncertainty. The relative expanded uncertainty UCMC = (k uCMC) / x.
    For x ≥ 0.5 cmol mol−1, the relative expanded uncertainty is 0.21
  • Uncertainty table CRM
    {"row_1":{"col_1":"for x ≤ 0.5 cmol mol<sup><sub>−1</sub></sup>, the relative expanded uncertainty is:","col_2":"lg <sub>uCMC</sub> = a<sub>0</sub> + a<sub>1</sub> lg x"},"row_2":{"col_1":"for x &ge; 0.5 cmol mol<sup>&minus;1</sup>, the relative expanded uncertainty is:","col_2":"0.21"}}
    where x denotes the amount fraction carbon dioxide and uCMC the supported relative standard uncertainty. The relative expanded uncertainty UCMC = (k. uCMC)/x.
    a0 = -4,1926
    a1 = 0.4726
  • Uncertainty equation CRM : lg uCMC = a0 + a1 lg x
    a0 = -4.1926
    a1 = 0.4726 where x denotes the amount fraction carbon dioxide and uCMC the supported relative standard uncertainty. The relative expanded uncertainty UCMC = (k . uCMC) / x.
    For x ≥ 0.5 cmol mol−1, the relative expanded uncertainty is 0,21
  • Mechanism for measurement service delivery : Reference measurement service
  • Approved on 14 September 2023
  • Institute service identifier : CMI - 1014 - natural gas
  • CMC ID : EURAMET-QM-CZ-00000OF4-1
     
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 % Absolute expanded uncertainty in %
synthetic natural gas carbon dioxide 5 to 50 0.5
synthetic natural gas ethane 5 to 100 0.5
synthetic natural gas hexane 0.1 to 1 1.0
synthetic natural gas isobutane 0.5 to 10 0.8
synthetic natural gas isopentane 0.2 to 2 0.81
synthetic natural gas methane 700 to 980 5.0E-2
synthetic natural gas n-butane 0.5 to 10 0.79
synthetic natural gas n-pentane 0.2 to 2 0.79
synthetic natural gas nitrogen 5 to 100 0.5
synthetic natural gas propane 1 to 20 0.51
  • Mechanism for measurement service delivery : Calibration
  • Approved on 28 July 2022
  • Institute service identifier : CMI - 1014
  • CMC ID : EURAMET-QM-CZ-000002JF-2
     
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 hydrogen-enriched natural gas methane 500 to 999 6.0E-2 500 to 999 6.0E-2
  • Mechanism for measurement service delivery : Reference measurement service
  • Approved on 04 September 2023
  • Institute service identifier : CMI - 1014 - hydrogen-enriched natural gas
  • CMC ID : EURAMET-QM-CZ-00000OEQ-1
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance content in mol/kg Absolute expanded uncertainty in mol/kg Amount-of-substance content in mol/kg Absolute expanded uncertainty in mol/kg
water Total acid content expressed as hydrochloric acid 0.09 to 0.11 5.3E-6
  • Uncertainty equation CMC :
     
     
  • Mechanism for measurement service delivery : Calibration service.
  • Approved on 11 April 2021
  • Institute service identifier : 616-Coul-0.1
  • CMC ID : EURAMET-QM-CZ-00000M6M-1
     
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -30 °C to 35 °C
Radiation thermometer
Absolute expanded uncertainty : 0.4 K
Calibration by comparison with blackbody immersed in liquid bath
wavelength : (7 to 15) µm
Approved on 17 August 2017
Institute service identifier : CMI/1012-4509
CMC ID : EURAMET-T-CZ-0000095A-1
 
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 961.78 °C
Pure-metal thermocouple (type Pt-Au, Pt-Pd
Absolute expanded uncertainty : 0.17 K
Calibration in fixed point of Ag
Inhomogeneity uncertainty must be added to the combined uncertainty quoted in the calibration report
Approved on 08 June 2016
Institute service identifier : CMI/1012-313
CMC ID : EURAMET-T-CZ-0000094B-1
 

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