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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)
Slovakia, SMU (Slovensky Metrologicky Ustav)
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 5.0E-2 to 9.0E-2 0.099 to 10.1 0.1
  • Mechanism for measurement service delivery : CRM F01, CRM F02, CRM F03, CRM F04, CRM F05, CRM F06, CRM F07
  • Measurement temperature from 20 °C to 30 °C. Data given for 25 °C
  • Approved on 06 December 2011
  • Institute service identifier : F01-F07
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 2.0E-3 to 3.0E-3 1.5 to 1.9 5.0E-3
  • Mechanism for measurement service delivery : SMU CRM E10
  • 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 : E10
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 2.0E-3 to 4.0E-3 9.8 to 10.2 5.0E-3
  • Mechanism for measurement service delivery : SMU CRM E14
  • 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 : E14
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 7.2 2.0E-3 to 3.0E-3 6.8 to 7.2 5.0E-3
  • Mechanism for measurement service delivery : SMU CRM E12
  • 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 : E12
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 2.0E-3 to 3.0E-3 3.8 to 4.2 5.0E-3
  • Mechanism for measurement service delivery : SMU CRM E11
  • 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 : E11
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 2.0E-3 to 3.0E-3 9 to 9.4 5.0E-3
  • Mechanism for measurement service delivery : SMU CRM E13
  • 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 : E13
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 5.00E-3 to 0.1 0.15 to 9.0E-2 9.90E-3 to 0.0505 0.2
  • Mechanism for measurement service delivery : CRM F08, CRM F09, CRM F10
  • Measurement temperature from 20 °C to 30 °C. Data given for 25 °C
  • Approved on 06 December 2011
  • Institute service identifier : F08-F10
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 %
refinery gas 1,3-butadiene 5 to 30 1.5 5 to 30 1
refinery gas 1-butene 1 to 10 1 1 to 10 0.7
refinery gas ethane 10 to 100 0.5 10 to 100 0.5
refinery gas ethene 50 to 200 0.3 50 to 200 0.3
refinery gas helium 100 to 700 0.2 100 to 700 0.2
refinery gas hydrogen 50 to 200 0.9 50 to 200 0.9
refinery gas isobutylene 1 to 10 0.7 1 to 10 0.7
refinery gas methane 50 to 700 0.4 to 0.25 50 to 700 0.25
refinery gas nitrogen 10 to 700 0.5 10 to 700 0.5 to 0.3
refinery gas propene 5 to 100 0.3 5 to 100 0.3
  • Mechanism for measurement service delivery : PRMs-D24, instrument calibration
  • Approved on 13 June 2013
  • Institute service identifier : D24
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 % Amount-of-substance content in Absolute expanded uncertainty in
high purity acids acid 5 to 15 6.0E-3 to 4.0E-3
  • Mechanism for measurement service delivery : Calibration
  • Acidimetric value, total acid
  • Approved on 21 October 2001
  • Institute service identifier : I-09
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in g/L Relative expanded uncertainty in % Mass concentration in g/L Relative expanded uncertainty in %
monoelemental solution aluminum 0.5 to 10 0.1 to 6.0E-2 0.98 to 1.01 0.19
  • Mechanism for measurement service delivery : CRM B02
  • Approved on 27 March 2013
  • Institute service identifier : I-10-1
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in g/L Relative expanded uncertainty in % Mass concentration in g/L Relative expanded uncertainty in %
monoelemental solution arsenic 0.5 to 10 0.2 to 0.1 0.98 to 1.01 0.25
  • Mechanism for measurement service delivery : CRM B03
  • Approved on 27 March 2013
  • Institute service identifier : I-10-15
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in g/L Relative expanded uncertainty in % Mass concentration in g/L Relative expanded uncertainty in %
monoelemental solution barium 0.9 to 10 0.13 to 0.1 0.102 to 1.05 0.21
  • Mechanism for measurement service delivery : CRM B05
  • Approved on 27 March 2013
  • Institute service identifier : I-10-23
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 % Relative expanded uncertainty in %
tris bases expressed as tris 99.8 to 100 8.0E-3 to 1.2E-2 99.85 to 100 8.0E-3 to 1.4E-2
  • Mechanism for measurement service delivery : CRM (A07)
  • The mass fraction given was calculated expressing the acidimetric assay (includes trace impurities) as Tris (2-amino-2-hydroxymethyl-1,3-propanediol); certificate is given in terms of amount content
  • Approved on 22 October 2020
  • Institute service identifier : I-07
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in g/L Relative expanded uncertainty in % Mass concentration in g/L Relative expanded uncertainty in %
monoelemental solution bismuth 0.5 to 10 0.2 to 8.0E-2 0.98 to 1.01 0.19
  • Mechanism for measurement service delivery : CRM B06
  • Approved on 27 March 2013
  • Institute service identifier : I-10-2
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in g/L Relative expanded uncertainty in % Mass concentration in g/L Relative expanded uncertainty in %
monoelemental solution boron 0.5 to 10 0.2 to 0.1 0.98 to 1.01 0.2
  • Mechanism for measurement service delivery : CRM B04
  • Approved on 27 March 2013
  • Institute service identifier : I-10-20
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in g/L Relative expanded uncertainty in % Mass concentration in g/L Relative expanded uncertainty in %
monoelemental solution cadmium 0.5 to 10 0.2 to 0.1 0.98 to 1.01 0.2
  • Mechanism for measurement service delivery : CRM B08
  • Approved on 27 March 2013
  • Institute service identifier : I-10-4
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in g/L Relative expanded uncertainty in % Mass concentration in g/L Relative expanded uncertainty in %
monoelemental solution calcium 0.5 to 10 0.1 to 6.0E-2 0.98 to 1.01 0.19
  • Mechanism for measurement service delivery : CRM B07
  • Approved on 27 March 2013
  • Institute service identifier : I-10-3
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 0.3 to 0.2 60 to 140 0.2
nitrogen carbon monoxide 5 to 35 0.4 to 0.25 5 to 35 0.3 to 0.25
nitrogen propane 0.1 to 2 0.6 to 0.4 0.1 to 2 0.4
  • Mechanism for measurement service delivery : PRM and calibration
  • Approved on 22 October 2020
  • Institute service identifier : SMU/D01
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 0.1 to 10 0.5 to 0.3 0.1 to 10 0.5 to 0.3
  • Mechanism for measurement service delivery : PRM and calibration
  • Approved on 22 October 2020
  • Institute service identifier : SMU/D02
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 0.3 to 0.2 10 to 200 0.3 to 0.2
  • Mechanism for measurement service delivery : PRM and calibration
  • Approved on 22 October 2020
  • Institute service identifier : SMU/D12

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