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United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Food for United Kingdom (.PDF file)
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
(k = 2, 95%) in %
Mass fraction in mg/kg Absolute expanded uncertainty
(k = 2.01, 95%) in mg/kg
non-fatty and moderately fatty food tin 200 to 300 1.3 to 1.5 225 11
Mechanism(s) for measurement service delivery: Calibration, ERML-BC084
Uncertainty convention 1.
Approved on 13 June 2013.
Internal NMI service identifier: LGC/Inorg-023

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for High purity chemicals for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in % Relative expanded uncertainty
(k = 2, 95 %) in %
Mass fraction in % Absolute expanded uncertainty
(k = 2, 95 %) in %
2,6-di-tert-butyl-4-methyl-phenol or BHT 2,6-di-tert-butyl-4-methyl-phenol or BHT 99.8 1.4 99.8 1.4
Mechanism(s) for measurement service delivery: LGC7300 plus calibration
Internal NMI service identifier: LGC/Org-015

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Biological fluids and materials for United Kingdom (.PDF file)
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
(k = 2, 95%) in %
Mass fraction in mg/kg Absolute expanded uncertainty
(k = 2, 95%) in mg/kg
blood serum essential elements: Fe, Zn, Cu, Se 0.02 to 500 5 to 2 0.064 to 0.658 0.003 to 0.033
Mechanism(s) for measurement service delivery: Calibration and ERM-DA120 (Copper, Selenium and Zinc)
Uncertainty convention 2 for capability.
Uncertainty convention 1 for CRMs.
Approved on 28 June 2016.
Internal NMI service identifier: LGC/Inorg-050b

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Advanced materials for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in µg/g Relative expanded uncertainty
(k = 2, 95%) in %
plastic materials mercury 10 to 10000 3 to 5
Mechanism(s) for measurement service delivery: Calibration
Uncertainty convention 1.
Approved on 06 December 2011.
Internal NMI service identifier: LGC/Inorg-035c

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Food for United Kingdom (.PDF file)
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
(k = 2, 95%) in %
Mass fraction in µg/g Absolute expanded uncertainty
(k = 2, 95%) in %
food and food supplements selenomethionine 0.5 to 4000 4 to 15 27.41 10
Mechanism(s) for measurement service delivery: CRM (ERM-BC210a) and reference values
Uncertainty convention 1.
Approved on 13 June 2013.
Internal NMI service identifier: LGC/Inorg-034

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Organic solutions for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in g/L Relative expanded uncertainty
(k = 2, 95%) in %
Mass concentration in g/L Absolute expanded uncertainty
(k = 2, 95%) in g/L
water ethanol 0.2 to 6 0.6 to 1.2 0.20 to 2.00 0.006
Mechanism(s) for measurement service delivery: Calibration and ERM AC401 to AC403 and AC409
Uncertainty convention 1.
Approved on 23 November 2009.
Internal NMI service identifier: LGC/Org-003 R

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Organic solutions for United Kingdom (.PDF file)
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
(k = 2, 95%) in %
Mass fraction in µg/kg Absolute expanded uncertainty
(k = 2, 95%) in µg/kg
2,2,4-trimethylpentane PCB congeners 25 to 1100 0.9 to 4.0 678 to 712 7 to 37
Mechanism(s) for measurement service delivery: Calibration and ERM AC823
Uncertainty convention 1.
Approved on 23 November 2009.
Internal NMI service identifier: LGC/Org-029

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Inorganic solutions for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in µg/g Relative expanded uncertainty
(k = 2, 95 %) in %
monoelemental solution nickel 0.01 to 10000 0.4 to 0.8
Mechanism(s) for measurement service delivery: Calibration
Approved on 27 March 2013.
Uncertainty convention 1.
Internal NMI service identifier: LGC/Inorg-001h

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Water for United Kingdom (.PDF file)
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
(k = 2, 95%) in %
Mass fraction in µg/L Absolute expanded uncertainty
(k = 2.16, 95%) in %
fresh water zinc 5 to 1000 0.7 to 2 628 0.7
Mechanism(s) for measurement service delivery: Calibration and CA022
Uncertainty convention 1.
Approved on 27 March 2013.
Internal NMI service identifier: LGC/Inorg-003f

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 carbonyl sulfide 1 to 10 2 1 to 10 2
Mechanism(s) for measurement service delivery: SGS and calibration
Internal NMI service identifier: NPL/36

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Biological fluids and materials for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in mg/kg Relative expanded uncertainty
(k = 2, 95%) in %
blood serum toxic elements: Ti, Cr, Pb, Cd, Ag, Sb, Sn, Hg, Mo, V, Ba 0.02 to 500 5 to 2
Mechanism(s) for measurement service delivery: Calibration
Uncertainty convention 2.
Approved on 28 June 2016.
Internal NMI service identifier: LGC/Inorg-050c

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Food for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in µg/g Relative expanded uncertainty
(k = 2, 95%) in %
corn oil p,p'-DDE 0.08 to 10 0.8 to 0.9
Mechanism(s) for measurement service delivery: Calibration
Uncertainty convention 1.
Approved on 13 June 2013.
Internal NMI service identifier: LGC/Org-002a

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Advanced materials for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in µg/g Relative expanded uncertainty
(k = 2, 95%) in %
plastic materials lead 10 to 10000 1 to 5
Mechanism(s) for measurement service delivery: Calibration
Uncertainty convention 1.
Approved on 06 December 2011.
Internal NMI service identifier: LGC/Inorg-035d

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Inorganic solutions for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in µg/g Relative expanded uncertainty
(k = 2, 95 %) in %
monoelemental solution lead 0.01 to 10000 0.4 to 0.8
Mechanism(s) for measurement service delivery: Calibration
Approved on 27 March 2013.
Uncertainty convention 1.
Internal NMI service identifier: LGC/Inorg-001i

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Organic solutions for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Amount-of-substance content in nmol/g Relative expanded uncertainty
(k = 2, 95%) in %
aqueous buffer somatropin 20 to 100 4 to 10
Mechanism(s) for measurement service delivery: Calibration
Uncertainty convention 1.
Approved on 06 September 2012.
(Recombinant Human Growth Hormone (rhGH, somatropin)).
Internal NMI service identifier: LGC/Bio-001

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Water for United Kingdom (.PDF file)
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
(k = 2, 95%) in %
Mass fraction in µg/kg Absolute expanded uncertainty
(k = 2, 95%) in µg/kg
estuarine water cadmium 5 to 1000 0.7 to 2 101 2
Mechanism(s) for measurement service delivery: Calibration and LGC 6016
Uncertainty convention 1.
Approved on 27 March 2013.
Internal NMI service identifier: LGC/Inorg-004a

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for High purity chemicals for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in % Relative expanded uncertainty
(k = 2, 95 %) in %
Mass fraction in % Absolute expanded uncertainty
(k = 2, 95 %) in %
saccharin 2,3-dihydro-1,2-benzisothiazol-3-one-1,1dioxide or 1,2-Benzisothiazolin-3-one,1,1-dioxide 99.6 0.6 99.6 0.6
Mechanism(s) for measurement service delivery: LGC7302 plus calibration
Internal NMI service identifier: LGC/Org-017

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 %
nitrogen hydrogen chloride 10 to 100 4 to 3 10 to 100 4 to 3
Mechanism(s) for measurement service delivery: SGS and calibration
Internal NMI service identifier: NPL/39

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Food for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in µg/g Relative expanded uncertainty
(k = 2, 95%) in %
fish oil p,p'-DDE 0.08 to 10 1.6 to 3.7
Mechanism(s) for measurement service delivery: Calibration
Uncertainty convention 1.
Approved on 13 June 2013.
Internal NMI service identifier: LGC/Org-002b

United Kingdom, LGC (Laboratory of the Government Chemist)
Complete CMCs in Chemistry for Organic solutions for United Kingdom (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Amount-of-substance content in nmol/g Relative expanded uncertainty
(k = 2, 95%) in %
aqueous buffer peptide of known sequence containing up to 15 amino acids which must contain at least three of the following AA (A,G,V,L,I,P,F,K,R) 20 to 100 2 to 5
Mechanism(s) for measurement service delivery: Calibration
Uncertainty convention 1.
Approved on 06 September 2012.
Internal NMI service identifier: LGC/Bio-002