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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen sulfur dioxide 10 to 1000 0.5 10 to 1000 3
Mechanism(s) for measurement service delivery: PRGM and calibration
Approved on 27 March 2013.
Internal NMI service identifier: NPL/58 rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen nitrogen monoxide 10 to 1000 1 10 to 1000 3
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/58 rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen carbon monoxide 10 to 1000 0.5 10 to 1000 3
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/58 rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen propane 1 to 100 0.3 1 to 100 3
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/58 rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen carbon dioxide 50E+03 to 200E+03 0.2 50E+03 to 200E+03 3
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/58 rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen sulfur dioxide 100 to 1000 2 to 1.5 100 to 1000 2 to 1.5
Mechanism(s) for measurement service delivery: SGS and calibration
Approved on 08 July 2015.
Internal NMI service identifier: NPL/30 b rev

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen nitrogen dioxide 1 to 10 3 to 1 1 to 10 3 to 1
Mechanism(s) for measurement service delivery: SGS and calibration
Approved on 13 June 2013.
Internal NMI service identifier: NPL/75

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
synthetic air nitrogen dioxide 1 to 10 3 to 1 1 to 10 3 to 1
Mechanism(s) for measurement service delivery: SGS and calibration
Approved on 13 June 2013.
Internal NMI service identifier: NPL/76

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
synthetic air nitrogen dioxide 100 to 1000 3 100 to 1000 3
Mechanism(s) for measurement service delivery: SGS and calibration
Approved on 13 June 2013.
Internal NMI service identifier: NPL/77

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen ethanol 50 to 500 0.25 to 0.15 50 to 500 0.35 to 0.25
Mechanism(s) for measurement service delivery: PRGM and calibration
Approved on 08 July 2015.
Internal NMI service identifier: NPL/78

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in Ámol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in Ámol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
synthetic air ethanol 50 to 500 0.25 to 0.15 50 to 500 0.35 to 0.25
Mechanism(s) for measurement service delivery: PRGM and calibration
Approved on 08 July 2015.
Internal NMI service identifier: NPL/79

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen benzene 1 to 10 2.5 to 1.5 1 to 10 2.5 to 1
Mechanism(s) for measurement service delivery: PRGM and calibration
Approved on 19 June 2014.
Internal NMI service identifier: NPL/51rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen toluene 1 to 10 3 to 2.5 1 to 10 3 to 1.2
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/51rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen ethylbenzene 1 to 10 3 to 2.5 1 to 10 3 to 1.2
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/51rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen o-xylene 1 to 10 3 to 2.5 1 to 10 3 to 1.2
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/51rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen m-xylene 1 to 10 3 to 2.5 1 to 10 3 to 1.2
Mechanism(s) for measurement service delivery: PRGM and calibration
(m+p-xylene).
Internal NMI service identifier: NPL/51rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen benzene 10 to 100 1.5 10 to 100 1.5 to 1
Mechanism(s) for measurement service delivery: PRGM and calibration
Approved on 19 June 2014.
Internal NMI service identifier: NPL/52rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen toluene 10 to 100 2.5 10 to 100 2.5 to 1.2
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/52rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen ethylbenzene 10 to 100 2.5 10 to 100 2.5 to 1.2
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/52rev
This displays only one part of a multi-component CMC.

United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Chemistry for Gases for United Kingdom (.PDF file)
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
(k = 2, 95 %) in %
Amount-of-substance fraction in nmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
nitrogen o-xylene 10 to 100 2.5 10 to 100 2.5 to 1.2
Mechanism(s) for measurement service delivery: PRGM and calibration
Internal NMI service identifier: NPL/52rev
This displays only one part of a multi-component CMC.