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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)
Japan, CERI (Chemicals Evaluation and Research Institute)
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 nmol/mol Relative expanded uncertainty in %
nitrogen 1,2-dichloroethane 50 to 1.00E5 2 to 1 50 to 1.00E5 2 to 1
nitrogen 1,3-butadiene 50 to 1.00E5 2 to 1 50 to 1.00E5 2 to 1
nitrogen benzene 50 to 1.00E5 2 to 1 50 to 1.00E5 2 to 1
nitrogen chloroform 50 to 1.00E5 2 to 1 50 to 1.00E5 2 to 1
nitrogen dichloromethane 50 to 1.00E5 2 to 1 50 to 1.00E5 2 to 1
nitrogen tetrachloroethylene 50 to 1.00E5 2 to 1 50 to 1.00E5 2 to 1
nitrogen trichloroethylene 50 to 1.00E5 2 to 1 50 to 1.00E5 2 to 1
nitrogen vinyl chloride 50 to 1.00E5 2 to 1 50 to 1.00E5 2 to 1
  • Mechanism for measurement service delivery : JCSS
  • Approved on 04 April 2022
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 nmol/mol Relative expanded uncertainty in %
nitrogen 1,2-dichloroethane 50 to 1.00E5 3 to 2 100 to 1000 3
nitrogen 1,3-butadiene 50 to 1.00E5 2 to 1 100 to 1000 2
nitrogen benzene 50 to 1.00E5 2 to 1 100 to 1000 2
nitrogen chloroform 50 to 1.00E5 2 to 1 100 to 1000 2
nitrogen dichloromethane 50 to 1.00E5 2 to 1 100 to 1000 2
nitrogen tetrachloroethylene 50 to 1.00E5 2 to 1 100 to 1000 2
nitrogen trichloroethylene 50 to 1.00E5 2 to 1 100 to 1000 2
nitrogen vinyl chloride 50 to 1.00E5 2 to 1 100 to 1000 2
  • Mechanism for measurement service delivery : JCSS
  • Approved on 21 October 2001
  • Institute service identifier : 4400-05
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 ammonia 30 to 100 4 30 to 100 4
  • Mechanism for measurement service delivery : JCSS (Japan Calibration Service System). CERI calibrates gas mixtures from gas company and provides CERI's CRM to users.
  • Approved on 13 June 2013
  • Institute service identifier : 3409a
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 nmol/mol Amount-of-substance fraction in Absolute expanded uncertainty in
nitrogen benzene 2 to 20 0.9
nitrogen o-xylene 2 to 20 0.7
nitrogen toluene 2 to 20 0.7
  • Mechanism for measurement service delivery : JCSS
  • Approved on 24 January 2006
  • Institute service identifier : 440001
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 nmol/mol Relative expanded uncertainty in %
nitrogen benzene 20 to 100 1.6 100 to 1000 2 to 1
nitrogen ethylbenzene 20 to 100 1 100 to 1000 2 to 1
nitrogen m-xylene 20 to 100 1 100 to 1000 2 to 1
nitrogen o-xylene 20 to 100 1 100 to 1000 2 to 1
nitrogen toluene 20 to 100 1 100 to 1000 2 to 1
  • Mechanism for measurement service delivery : JCSS
  • Approved on 29 April 2005
  • Institute service identifier : 440002
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 carbon dioxide 100 to 200 0.65 to 0.35 100 to 200 0.65 to 0.35
  • Mechanism for measurement service delivery : JCSS
  • Approved on 08 July 2020
  • Institute service identifier : 3403a
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 carbon dioxide 200 to 1.60E5 0.35 200 to 1.60E5 0.35
  • Mechanism for measurement service delivery : JCSS
  • Approved on 08 July 2020
  • Institute service identifier : 3403b
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 carbon monoxide 10 to 1.50E5 0.6 to 0.3 10 to 1.50E5 0.6 to 0.3
  • Mechanism for measurement service delivery : JCSS
  • Approved on 08 July 2020
  • Institute service identifier : 3402b
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 carbon monoxide 3 to 10 0.6 to 0.3 3 to 10 0.6 to 0.3
  • Mechanism for measurement service delivery : JCSS
  • Approved on 08 July 2020
  • Institute service identifier : 3402a
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 ethanol 100 to 500 1.5 100 to 500 1.5
  • Mechanism for measurement service delivery : JCSS
  • Approved on 20 January 2016
  • Institute service identifier : 4401b
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 ethanol 100 to 500 1.5 100 to 500 1.5
  • Mechanism for measurement service delivery : JCSS
  • Approved on 29 April 2005
  • Institute service identifier : 4401a
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 ethanol 100 to 500 1.5 100 to 500 1.5
  • Mechanism for measurement service delivery : JCSS
  • Approved on 20 January 2016
  • Institute service identifier : 4401a
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 ethanol 100 to 500 1.5 100 to 500 1.5
  • Mechanism for measurement service delivery : JCSS
  • Approved on 29 April 2005
  • Institute service identifier : 4401b
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 methane 10 to 50 0.6 10 to 50 0.6
  • Mechanism for measurement service delivery : JCSS
  • Approved on 08 July 2020
  • Institute service identifier : 4401
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 methane 2.5 to 10 3.7 to 0.6 2.5 to 10 2.5 to 0.6
  • Mechanism for measurement service delivery : JCSS
  • Approved on 08 July 2020
  • Institute service identifier : 4401-3
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 methane 1 to 1.7 3.6 to 2.1 1 to 1.7 3.6 to 2.1
  • Mechanism for measurement service delivery : JCSS
  • Approved on 08 July 2020
  • Institute service identifier : 4401-2
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 nitric dioxide 5 to 50 3 5 to 50 3
  • Mechanism for measurement service delivery : JCSS
  • Approved on 29 April 2005
  • Institute service identifier : 3408a
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 nitric oxide 0.1 to 0.5 4.5 to 0.8 0.1 to 0.5 4.5 to 0.8
  • Mechanism for measurement service delivery : JCSS
  • Approved on 12 March 2013
  • Institute service identifier : 3405a
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 nitric oxide 2 to 50 0.8 to 0.6 2 to 50 0.8 to 0.6
  • Mechanism for measurement service delivery : JCSS
  • Approved on 12 March 2013
  • Institute service identifier : 3405c-1
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 nitric oxide 50 to 1.00E4 0.6 50 to 1.00E4 0.6
  • Mechanism for measurement service delivery : JCSS
  • Approved on 12 March 2013
  • Institute service identifier : 3405d

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