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General physics
Chemical material
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)
Argentina, INTI (Instituto Nacional de Tecnologia Industrial)
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
copper alloys iron 500 to 2500 2 to 9
  • Mechanism for measurement service delivery : Analytical service
  • Approved on 20 November 2014
  • Institute service identifier : INORGMET-1
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
whole fat soybean powder iron 50 to 1000 6 to 1.0E1
  • Mechanism for measurement service delivery : Analytical service
  • Approved on 19 December 2013
  • Institute service identifier : INORGF-3
Australia, NMIA (National Measurement Institute, Australia)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in ng/g Relative expanded uncertainty in % Mass fraction in ng/g Relative expanded uncertainty in %
sea water iron 2 to 1000 5 to 1 21.7 1.8
  • Mechanism for measurement service delivery : CRM MX014
  • Approved on 19 June 2014
  • Institute service identifier : MX014_Fe
Brazil, INMETRO (Instituto Nacional de Metrologia, Qualidade e Tecnologia)
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 mg/kg Mass fraction in
ethanol fuel iron 0.01 to 0.5 5.0E-4 to 2.0E-2
  • Mechanism for measurement service delivery : Assigning values to PT scheme samples and measurement service
  • Approved on 20 July 2020
  • Institute service identifier : 8122-5
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 mg/kg Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg
natural water, synthetic water, acid solution (up to 10 %) iron 0.1 to 100 1.0E-2 to 2.5 0.1 to 100 1.0E-2 to 5
  • Mechanism for measurement service delivery : Assing values to PT scheme samples and measurement services. Certified reference materials.
  • Approved on 20 July 2020
  • Institute service identifier : MRC 8356
Canada, NRC (National Research Council)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in kg/kg Absolute expanded uncertainty in kg/kg Mass fraction in Absolute expanded uncertainty in
high purity iron iron 0.999 to 0.9999999 5.0E-3 to 5.0E-7
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 mg/kg Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg
cellulosic nanomaterial/Carbon nanotubes iron 0.05 to 3000 5.0E-2 to 1.5E2 0.224 to 2200 3.7E-2 to 2.0E2
  • Mechanism for measurement service delivery : CRM CNC-1, CRM CNCS-1, CRM SWCNT-1
  • Approved on 15 July 2017
  • Institute service identifier : TEN-4
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in ng/g Absolute expanded uncertainty in ng/g Mass fraction in µg/kg Absolute expanded uncertainty in µg/kg
fresh water iron 0.05 to 1000 5.0E-3 to 1.0E1 91.2 5.8
  • Mechanism for measurement service delivery : CRM SLRS-5
  • Approved on 27 March 2013
  • Institute service identifier : TEW10
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 mg/kg Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg
sediment iron 500 to 2.00E5 4.0E1 to 1.0E4 2460 to 4.11E4 9.0E1 to 6.4E2
  • Mechanism for measurement service delivery : CRM HISS-1,CRM MESS-4, CRM PACS-3
  • Approved on 15 July 2017
  • Institute service identifier : MES26
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 mg/kg Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg
food (fish, lobster) iron 1 to 6000 0.2 to 1.0E2 11.6 to 1070 0.9 to 8.0E1
  • Mechanism for measurement service delivery : CRM DOLT-5, CRM DORM-4, CRM TORT-3, CRM LUTS-1
  • Approved on 15 July 2017
  • Institute service identifier : MEF-21
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 mg/kg Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg
tissue iron 1 to 6000 0.2 to 1.0E2 11.6 to 1070 0.9 to 8.0E1
  • Mechanism for measurement service delivery : CRM DOLT-5, CRM DORM-4, CRM TORT-3, CRM LUTS-1
  • Approved on 15 July 2016
  • Institute service identifier : TEB08
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in ng/g Absolute expanded uncertainty in ng/g Mass fraction in µg/kg Absolute expanded uncertainty in µg/kg
seawater iron 0.05 to 2 4.0E-3 to 0.1 0.483 to 1.4 4.5E-2 to 0.11
  • Mechanism for measurement service delivery : CRM CASS-5, CRM NASS-6, CRM SLEW-3
  • Approved on 27 March 2013
  • Institute service identifier : TEW24
China, NIM (National Institute of Metrology)
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 mg/kg Relative expanded uncertainty in %
egg powder iron 10 to 500 1.0E1 to 2 123 8.9
  • Mechanism for measurement service delivery : CRM GBW(E)100198
  • Approved on 30 August 2017
  • Institute service identifier : Food-194
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/g Relative expanded uncertainty in % Mass fraction in mg/g Relative expanded uncertainty in %
sediment iron 10 to 50 5 to 2 39.3 2
  • Mechanism for measurement service delivery : CRM GBW08308
  • Approved on 26 September 2018
  • Institute service identifier : Sediment-18
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in mg/L Relative expanded uncertainty in % Mass concentration in mg/L Relative expanded uncertainty in %
monoelemental solution iron 100 to 1000 0.6 to 0.4 1000 0.4
  • Mechanism for measurement service delivery : GBW 08616
  • Approved on 12 March 2013
  • Institute service identifier : IS-00003
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in µg/mL Relative expanded uncertainty in % Mass concentration in µg/mL Relative expanded uncertainty in %
acidic solution iron 0.01 to 1.00E4 4 to 0.4 1000 0.4
  • Mechanism for measurement service delivery : GBW 08616
  • Approved on 12 March 2013
  • Institute service identifier : IS-28
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in µg/g Absolute expanded uncertainty in µg/g
tobacco iron 10 to 1000 7 to 2 962 to 966 6.0E1 to 6.4E1
  • Mechanism for measurement service delivery : Analytical test, GBW08514 and GBW08515
  • Approved on 21 October 2001
  • Institute service identifier : Bio-20
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 mg/kg Relative expanded uncertainty in %
rice powder iron 5 to 500 1.0E1 to 2 12.2 7.4
  • Mechanism for measurement service delivery : CRM GBW(E)100194
  • Approved on 30 August 2017
  • Institute service identifier : Food-170
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Relative expanded uncertainty in % Mass fraction in µg/g Relative expanded uncertainty in %
human serum iron 0.5 to 1.359 5.6 to 3.4 0.5 to 1.359 5.6 to 3.4
  • Mechanism for measurement service delivery : NIM CRM GBW09152
  • Approved on 30 August 2017
  • Institute service identifier : Bio-54
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 mg/kg Relative expanded uncertainty in %
bovine muscle powder iron 5 to 500 1.0E1 to 2 55.5 4.5
  • Mechanism for measurement service delivery : CRM GBW(E)100197
  • Approved on 30 August 2017
  • Institute service identifier : Food-188

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