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Chemical Analyte
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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)
United Kingdom, LGC (Laboratory of the Government Chemist)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Absolute isotope amount ratio in Relative expanded uncertainty in % Absolute isotope amount ratio in Relative expanded uncertainty in %
glycine 13C/12C 9.74E-3 to 0.0116 0.3 to 0.5 1.06E-5 0.3
  • Mechanism for measurement service delivery : Calibration and ERM-AE672
  • Approved on 08 July 2015
  • Institute service identifier : Inorg-046 R
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 % Mass fraction in Absolute expanded uncertainty in
urine 19-norandrosterone 2 to 4.3 5 to 1.0E1
  • Mechanism for measurement service delivery : Calibration
  • Approved on 02 July 2007
  • Institute service identifier : Org-036
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
DNA copy number ratio in % Absolute expanded uncertainty in % DNA copy number ratio in
unprocessed, high oil/fat ground seed matrix and any other material with the same level of complexity […]specified intact sequence fragments of a length up to 150 nucleotides […] 1.00E-3 to 1 4.0E-2 to 0.3
  • Mechanism for measurement service delivery : Value assignment of client samples
  • The exact term for the "Analyte or component" is "Quantification of the ratio of the number of copies of specified intact sequence fragments of a length up to 150 nucleotides following extraction from an unprocessed, high oil/fat ground seed matrix, with a copy number ratio from 0.001 to 1"
  • Approved on 15 October 2019
  • Institute service identifier : Bio-008
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
non-fatty and moderately fatty food arsenic 0.08 to 18 5 to 8
  • Mechanism for measurement service delivery : Calibration
  • Approved on 13 June 2013
  • Institute service identifier : Inorg-025
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
plant arsenic 0.3 to 15 3 to 1.0E1
  • Mechanism for measurement service delivery : Calibration service on request
  • Approved on 28 June 2016
  • Institute service identifier : Inorg-040
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
monoelemental solution arsenic 1 to 1000 2 to 3.5
  • Mechanism for measurement service delivery : Calibration
  • Approved on 27 March 2013
  • Institute service identifier : Inorg-021a
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 in % Mass fraction in % Absolute expanded uncertainty in %
Biological fluids cadmium 0.01 to 0.5 6 to 2
food cadmium 0.01 to 0.5 6 to 2
Tissues cadmium 0.01 to 0.5 6 to 2
Tissues chromium 0.01 to 0.5 6 to 2
food chromium 0.01 to 0.5 6 to 2
Biological fluids chromium 0.01 to 0.5 6 to 2
Tissues lead 0.01 to 0.5 6 to 2
food lead 0.01 to 0.5 6 to 2
Biological fluids lead 0.01 to 0.5 6 to 2
Tissues mercury 0.01 to 0.5 6 to 2
Biological fluids mercury 0.01 to 0.5 6 to 2
food mercury 0.01 to 0.5 6 to 2
  • Mechanism for measurement service delivery : Calibration service on request
  • Capability extends to additional matrices within 'biological fluids and materials' such as blood, plasma etc.
    This submission is part of a broad scope claim for the elements Pb, Hg, Cd and Cr. The element grouping was done according to toxic and essential elements classification and, therefore, according to ranges. The elements are considered to be of similar complexity. The claims have been given the broad scope identifier of LGC-I-G-002.
  • Approved on 08 July 2021
  • Institute service identifier : Inorg-075
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
plastic materials cadmium 10 to 1000 1 to 5
  • Mechanism for measurement service delivery : Calibration
  • Approved on 06 December 2011
  • Institute service identifier : Inorg-035a
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 in % Mass fraction in µg/L Relative expanded uncertainty in %
fresh water cadmium 4 to 1000 0.7 to 2 5.26 4
  • Mechanism for measurement service delivery : Calibration and ERM CA022
  • Approved on 27 March 2013
  • Institute service identifier : Inorg-003a R
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg
non-fatty and moderately fatty food cadmium 0.1 to 40 2.5 to 5 0.112 7.0E-3
  • Mechanism for measurement service delivery : Calibration, ERM-BC084
  • Approved on 13 June 2013
  • Institute service identifier : Inorg-029
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
monoelemental solution cadmium 0.01 to 1.00E4 0.4 to 0.8
  • Mechanism for measurement service delivery : Calibration
  • Approved on 27 March 2013
  • Institute service identifier : Inorg-001b
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
multielemental solution cadmium 0.01 to 1000 0.4 to 2
  • Mechanism for measurement service delivery : Calibration
  • Approved on 27 March 2013
  • Institute service identifier : Inorg-002a
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 % Mass fraction in µg/kg Absolute expanded uncertainty in µg/kg
estuarine water cadmium 5 to 1000 0.7 to 2 101 2
  • Mechanism for measurement service delivery : Calibration and LGC 6016
  • Approved on 27 March 2013
  • Institute service identifier : Inorg-004a
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
multielemental solution calcium 0.1 to 1.00E4 0.5 to 2
  • Mechanism for measurement service delivery : Calibration
  • Approved on 27 March 2013
  • Institute service identifier : Inorg-002m
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
monoelemental solution calcium 0.1 to 1.00E4 0.5 to 2
  • Mechanism for measurement service delivery : Calibration
  • Approved on 27 March 2013
  • Institute service identifier : Inorg-001o
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Absolute expanded uncertainty in % Mass fraction in mg/kg Absolute expanded uncertainty in mg/kg
blood serum cationic electrolytes: K, Ca, Mg, Li, Sr 0.1 to 500 5 to 2 19 to 123 2 to 1.4E1
  • Mechanism for measurement service delivery : Calibration and ERM-DA250 and ERM-DA251 (Calcium, Potassium and Magnesium)
  • for capability. for CRMs
  • Approved on 28 June 2016
  • Institute service identifier : Inorg-050a
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/kg Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
tissue cationic electrolytes: K, Ca, Mg, Li, Sr 0.05 to 500 5 to 2
  • Mechanism for measurement service delivery : Calibration
  • Approved on 28 June 2016
  • Institute service identifier : Inorg-051a
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in % Relative expanded uncertainty in % Mass fraction in
solid peptide chemically synthesized linear peptides of known sequence up to 5kDa without sulphur bridges with a content of peptidic impurities between 0 and 15% 70 to 100 2 to 5
  • Mechanism for measurement service delivery : Calibration
  • Approved on 15 October 2019
  • Institute service identifier : Bio-008
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 % Mass fraction in Absolute expanded uncertainty in
blood serum cholesterol 1 to 3 0.2 to 1
  • Mechanism for measurement service delivery : Calibration
  • Approved on 01 March 2005
  • Institute service identifier : Org-005 R
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in µg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
multielemental solution chromium 0.01 to 1000 0.4 to 2
  • Mechanism for measurement service delivery : Calibration
  • Approved on 27 March 2013
  • Institute service identifier : Inorg-002b

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