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CMC AREA
CMCs Chemistry (2)
IONIZING RADIATION
Ambient dose equivalent rate
CHEMICAL MATERIAL
synthetic air (2)
CHEMICAL ANALYTE
ethane
ethanol (2)
GEOGRAPHIC LOCATION
EURAMET (2)
United Kingdom (2)
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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 µmol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in µmol/mol Absolute expanded uncertainty
(k = 2, 95 %) in %
synthetic air ethanol 100 to 200 1.5 100 to 200 1.5
Mechanism(s) for measurement service delivery: PRGM, SGS and calibration
Approved on 30 June 2017.
Internal NMI service identifier: NPL/56 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 µmol/mol Relative expanded uncertainty
(k = 2, 95 %) in %
Amount-of-substance fraction in µmol/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