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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)
China, NIM (National Institute of Metrology)
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
solid 8.5 to 9.5 3.4E-3 9.178 to 9.188 3.4E-3
  • Mechanism for measurement service delivery : Provision of CRMs: GBW 13106
  • Primary measurement in Harned cell/High-accuracy weighing machine.The CRM is destined for preparation of the aqueous buffer solution. Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. The data are given for 25 °C.  (The measured temperature is 15 °C, 25 °C and 37 °C. - this doesn't matter for the solid CRM) 
  • Approved on 23 October 2024
  • Institute service identifier : pH-5
  • CMC ID : APMP-QM-CN-00000PG5-1
     
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 %
aueous solution 0.01 to 10 0.2 to 8.0E-2 0.01 to 10 0.5 to 0.1
  • Mechanism for measurement service delivery : CRMs, calibration, provision of reference values for PT schemes
  • The temperature range is from 5 °C to 50 °C
  • Approved on 06 December 2011
  • Institute service identifier : EC-1
  • CMC ID : APMP-QM-CN-000000UP-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 10 to 20 8.0E-2 10 to 20 0.1
  • Mechanism for measurement service delivery : NIM CRMs GBW13120 and GBW13124, Calibration, Provision of reference values for PT schemes.
  • The temperature range is from 15 °C to 35 °C
  • Approved on 20 January 2016
  • Institute service identifier : EC-3
  • CMC ID : APMP-QM-CN-000000UR-1
     
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in mS/m Relative expanded uncertainty in % Electrolytic conductivity in % Absolute expanded uncertainty in %
aqueous solution 5.50E-3 to 15 0.2 to 1.1
  • Mechanism for measurement service delivery : Calibration of online conductivity sensors
  • Flow-through cells only. Calibration service provided at 25 °C.
  • Approved on 30 September 2024
  • Institute service identifier : EC-4
  • CMC ID : APMP-QM-CN-00000PFQ-1
     
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in mS/m Relative expanded uncertainty in % Electrolytic conductivity in mS/m Relative expanded uncertainty in %
aueous solution 2 to 10 0.2 2 to 10 1 to 0.5
  • Mechanism for measurement service delivery : CRMs, calibration, provision of reference values for PT schemes
  • The temperature range is from 5 °C to 50 °C
  • Approved on 06 December 2011
  • Institute service identifier : EC-2
  • CMC ID : APMP-QM-CN-000000UQ-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
solid 9.5 to 10.5 3.2E-3 10.006 to 10.016 3.4E-3
  • Mechanism for measurement service delivery : provision of CRMs: GBW13109 and GBW13110
  • Primary measurement in Harned cell/High-accuracy weighing machine.The CRM is destined for preparation of the aqueous buffer solution. Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention. The data are given for 25 °C.  (The measured temperature is 15 °C, 25 °C and 37 °C. - this is doesn't matter for the solid CRM)
  • Approved on 23 October 2024
  • Institute service identifier : pH-2
  • CMC ID : APMP-QM-CN-00000PG8-1
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance content or amount content in mmol/kg Absolute expanded uncertainty in % Amount-of-substance content or amount content in mmol/kg Absolute expanded uncertainty in mmol/kg
aqueous solution (methyl)seleno-cysteine 1.00E-3 to 1 1.0E1 to 2.7 0.442 1.2E-2
  • Mechanism for measurement service delivery : CRM GBW 10088
  • Approved on 20 January 2016
  • Institute service identifier : IS-94
  • CMC ID : APMP-QM-CN-000002DT-1
     
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 Relative expanded uncertainty in % Amount-of-substance fraction in µmol/mol Relative expanded uncertainty in %
nitrogen 1,1,2-trichloroethane 100 to 1.00E4 3 1 5
  • Mechanism for measurement service delivery : CRM-GBW(E) 084048 and calibration service
  • Approved on 06 June 2022
  • Institute service identifier : GAS 176
  • CMC ID : APMP-QM-CN-00000NOU-1
     
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 Relative expanded uncertainty in % Amount-of-substance fraction in % Relative expanded uncertainty in %
nitrogen 1,1,2-trichloroethane 3 to 100 1.0E2 to 3
  • Mechanism for measurement service delivery : Calibration service
  • Approved on 06 June 2022
  • Institute service identifier : GAS 175
  • CMC ID : APMP-QM-CN-00000NOT-1
     
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 Relative expanded uncertainty in % Amount -of-substance fraction in % Relative expanded uncertainty in %
nitrogen 1,1-dichloroethane 2 to 100 1.0E2 to 2
  • Mechanism for measurement service delivery : Calibration service
  • Approved on 05 April 2022
  • Institute service identifier : GAS 181
  • CMC ID : APMP-QM-CN-00000NJ7-1
     
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 Relative expanded uncertainty in % Amount -of-substance fraction in µmol/mol Relative expanded uncertainty in %
nitrogen 1,1-dichloroethane 100 to 1.00E4 2 1 5
  • Mechanism for measurement service delivery : CRM-GBW(E) 084048 and calibration service
  • Approved on 05 April 2022
  • Institute service identifier : GAS 182
  • CMC ID : APMP-QM-CN-00000NJ9-1
     
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 %
methane 1,2-butadiene 1 to 10 1.5 1 to 10 1.5
  • Mechanism for measurement service delivery : NIM CRM
  • Approved on 03 November 2014
  • Institute service identifier : GAS 51
  • CMC ID : APMP-QM-CN-000003UC-1
     
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 Relative expanded uncertainty in % Amount -of-substance fraction in % Relative expanded uncertainty in %
nitrogen 1,3-butadiene 2 to 100 1.0E2 to 2
  • Mechanism for measurement service delivery : Calibration service
  • Approved on 05 April 2022
  • Institute service identifier : GAS 185
  • CMC ID : APMP-QM-CN-00000NJC-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 refinery gas 1,3-butadiene 5 to 30 1 to 0.5 5 to 30 1 to 0.5
synthetic refinery gas 1-butene 1 to 10 2.9 to 0.6 1 to 10 2.9 to 0.6
synthetic refinery gas ethane 10 to 100 1 to 0.5 10 to 100 1 to 0.5
synthetic refinery gas ethene 50 to 200 2.6 to 1.8 50 to 200 2.6 to 1.8
synthetic refinery gas hydrogen 50 to 700 0.7 to 0.4 50 to 700 0.7 to 0.4
synthetic refinery gas isobutene 1 to 10 6 to 2.2 1 to 10 6 to 2.2
synthetic refinery gas methane 50 to 700 0.9 to 0.4 50 to 700 0.9 to 0.4
synthetic refinery gas n-butane 1 to 20 2.9 to 1 1 to 20 2.9 to 1
synthetic refinery gas n-pentane 1 to 10 6 to 1 1 to 10 6 to 1
synthetic refinery gas nitrogen 10 to 700 1.6 to 0.4 10 to 700 1.6 to 0.4
synthetic refinery gas propane 1 to 50 4.5 to 1.6 1 to 50 4.5 to 1.6
synthetic refinery gas propene 5 to 100 3.2 to 0.4 5 to 100 3.2 to 0.4
  • Mechanism for measurement service delivery : NIM CRM
  • Approved on 10 March 2021
  • Institute service identifier : GAS 118
  • CMC ID : APMP-QM-CN-000003TI-3,APMP-QM-CN-000003TJ-3,APMP-QM-CN-000003TF-3,APMP-QM-CN-000003TE-3,APMP-QM-CN-000003TN-3,APMP-QM-CN-000003TK-3,APMP-QM-CN-000003TD-3,APMP-QM-CN-000003TL-3,APMP-QM-CN-000003TM-3,APMP-QM-CN-000003TO-3,APMP-QM-CN-000003TH-3,APMP-QM-CN-000003TG-3,APMP-QM-CN-000003TJ-3,APMP-QM-CN-000003TF-3,APMP-QM-CN-000003TE-3,APMP-QM-CN-000003TN-3,APMP-QM-CN-000003TK-3,APMP-QM-CN-000003TD-3,APMP-QM-CN-000003TL-3,APMP-QM-CN-000003TM-3,APMP-QM-CN-000003TO-3,APMP-QM-CN-000003TH-3,APMP-QM-CN-000003TG-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 %
methane 1,3-butadiene 5 to 30 1.5 5 to 30 1.5
  • Mechanism for measurement service delivery : NIM CRM
  • Approved on 03 November 2014
  • Institute service identifier : GAS 52
  • CMC ID : APMP-QM-CN-000003UD-1
     
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 Relative expanded uncertainty in % Amount -of-substance fraction in µmol/mol Relative expanded uncertainty in %
nitrogen 1,3-butadiene 100 to 1.00E4 2 1 5
  • Mechanism for measurement service delivery : CRM-GBW(E) 084048 and calibration service
  • Approved on 05 April 2022
  • Institute service identifier : GAS 186
  • CMC ID : APMP-QM-CN-00000NJD-1
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/g Absolute expanded uncertainty in mg/g Mass fraction in mg/g Absolute expanded uncertainty in mg/g
1-aminohydantoin hydrochloride (AHD) 1-aminohydantoin hydrochloride (AHD) 980 to 1000 1.0E1 to 6 994 6
  • Mechanism for measurement service delivery : GBW10104
  • Approved on 23 October 2019
  • Institute service identifier : HPC-246
  • CMC ID : APMP-QM-CN-000003PF-2
     
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 ng/g Absolute expanded uncertainty in ng/g
human serum 17alpha- hydroxyprogesterone 0.51 to 1.65 2.0E-2 to 3.0E-2 0.51 to 1.65 2.0E-2 to 3.0E-2
  • Mechanism for measurement service delivery : GBW09829, GBW09830
  • Approved on 30 August 2017
  • Institute service identifier : Bio-49
  • CMC ID : APMP-QM-CN-0000049D-1
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/g Absolute expanded uncertainty in mg/g Mass fraction in mg/g Absolute expanded uncertainty in mg/g
high purity 17alpha- hydroxyprogesterone 17alpha- hydroxyprogesterone 990 to 1000 1.0E1 to 2 993 1.0E1
  • Mechanism for measurement service delivery : Calibration and GBW09220
  • Approved on 23 October 2019
  • Institute service identifier : HPC-260
  • CMC ID : APMP-QM-CN-000003PI-2
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in g/g Absolute expanded uncertainty in g/g Mass fraction in g/g Absolute expanded uncertainty in g/g
17beta-estradiol 17beta-estradiol 0.99 to 1 8.0E-3 to 3.0E-3 0.992 3.0E-3
  • Mechanism for measurement service delivery : CRM:GBW09223
  • Approved on 23 October 2019
  • Institute service identifier : HPC-276
  • CMC ID : APMP-QM-CN-00000K69-1
     

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