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Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Food for Mexico (.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 %
rice cadmium 2 to 14 1.7 to 3.0
Mechanism(s) for measurement service delivery: Value-assignment through CENAM Traceable Reference Materials (MRTC)
Approved on 19 July 2010.
Uncertainty convention 1.
Internal NMI service identifier: CENAM/620-Q008-016R
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Sediments, soils, ores, and particulates for Mexico (.PDF file)
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
(k = 2, 95%) in mg/g 		Mass fraction in mg/g Absolute expanded uncertainty
(k = 2, 95%) in mg/g
silica sand total aluminum as aluminum oxide 1.1 to 2 0.2 1.85 0.18
Mechanism(s) for measurement service delivery: DMR 73a
Internal NMI service identifier: CENAM/610-003
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for High purity chemicals for Mexico (.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 %
acetaldehyde acetaldehyde 95.7 to 100 0.3 to 1 95.7 0.5
Mechanism(s) for measurement service delivery: Analytical service
Uncertainty range convention 1.
Approved on 03 November 2006.
Internal NMI service identifier: CENAM/630-C014-008
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Water for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in µg/kg Relative expanded uncertainty
(k = 2, 95%) in %
fresh water lead 5 to 30 1 to 3
Mechanism(s) for measurement service delivery: Value-assignment through MRTC program
Approved on 27 March 2013.
Uncertainty convention 1.
Internal NMI service identifier: CENAM/620-Q008-007
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Inorganic solutions for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in mg/L Relative expanded uncertainty
(k = 2, 95%) in % 		Mass concentration in mg/L Absolute expanded uncertainty
(k = 2, 95%) in %
HNO3 in aqueous solution nickel 0.5 to 2.0 0.6 to 2.2 0.6 to 2.0 4.2
Mechanism(s) for measurement service delivery: DMR-8: annual PT
Uncertainty convention 1.
Approved on 27 March 2013.
Internal NMI service identifier: CENAM/620-C002-012
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Organic solutions for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in ng/g Relative expanded uncertainty
(k = 2, 95%) in %
organic solution 4,4'-DDE 8 to 600 3 to 10
Mechanism(s) for measurement service delivery: Analytical services
Uncertainty convention 1. Approved on 01 March 2005.
Internal NMI service identifier: CENAM/630-Q021-010
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Sediments, soils, ores, and particulates for Mexico (.PDF file)
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
(k = 2, 95%) in mg/g 		Mass fraction in mg/g Absolute expanded uncertainty
(k = 2, 95%) in mg/g
silica sand total titanium as titanium (IV) oxide 0.2 to 0.4 0.1 0.31 0.06
Mechanism(s) for measurement service delivery: DMR 73a
Internal NMI service identifier: CENAM/610-04
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Gases for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Amount of sustance fraction in nmol/mol Relative expanded uncertainty
(k = 2, 95%) in %
nitrogen nitrogen monoxide 600 to 850 1.4 to 2.0
Mechanism(s) for measurement service delivery: Program for value-assignment to gas mixture from producers (MRTC), calibration services and analytical services
Uncertainty convention 1.
Approved on 27 March 2013.
Internal NMI service identifier: CENAM/630-QS01.G011
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Sediments, soils, ores, and particulates for Mexico (.PDF file)
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
(k = 2, 95%) in mg/g 		Mass fraction in mg/g Absolute expanded uncertainty
(k = 2, 95%) in mg/g
calcium carbonate total calcium as calcium oxide 464 to 539 2 to 4 481 to 528 2 to 3.7
Mechanism(s) for measurement service delivery: DMR 59a, DMR 64a
Uncertainty convention 1.
Internal NMI service identifier: CENAM/610-005
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for High purity chemicals for Mexico (.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 %
methanol methanol 98 to 100 0.3 to 1 99.86 0.1
Mechanism(s) for measurement service delivery: Analytical service, DMR-165 x
Uncertainty range convention 1.
Approved on 03 November 2006.
Internal NMI service identifier: CENAM/630-C014-009
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Metals and metal alloys for Mexico (.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 %
nickel silver 1 to 2 30 to 10
Mechanism(s) for measurement service delivery: Value-assignment through MRTC program
Approved on 31 March 2012.
Uncertainty convention 2.
Internal NMI service identifier: CENAM/620-Q018-2
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Organic solutions for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Mass fraction in ng/g Relative expanded uncertainty
(k = 2, 95%) in %
organic solution aldrin 10 to 600 3 to 1
Mechanism(s) for measurement service delivery: Analytical services, PT 630-IL-1203
Uncertainty convention 2. Approved on 03 November 2006.
Internal NMI service identifier: CENAM/630-Q021-002
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for High purity chemicals for Mexico (.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-butanol 2-butanol 98 to 100 0.3 to 1 99.0 0.19
Mechanism(s) for measurement service delivery: Analytical service, DMR-165 x
Uncertainty range convention 1.
Approved on 03 November 2006.
Internal NMI service identifier: CENAM/630-C014-010
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Water for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in mg/l Relative expanded uncertainty
(k = 2, 95%) in % 		Mass concentration in mg/l Absolute expanded uncertainty
(k = 2, 95%) in %
anionic basic (NaOH) aqueous (K+) solution cyanide 0.08 to 2.4 4 to 9 2.05 to 1.79 7.88 to 7.55
Mechanism(s) for measurement service delivery: DMR-4. Annual PT and Value-assignment through MRTC program
Approved on 27 March 2013.
Uncertainty convention 1.
Internal NMI service identifier: CENAM/620-C007-002
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Inorganic solutions for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in mg/L Relative expanded uncertainty
(k = 2, 95%) in % 		Mass concentration in mg/L Absolute expanded uncertainty
(k = 2, 95%) in %
HNO3 in aqueous solution lead 1.0 to 15.0 0.8 to 3.5 1.0 to 11.0 3.5
Mechanism(s) for measurement service delivery: DMR-8: annual PT
Uncertainty convention 1.
Approved on 27 March 2013.
Internal NMI service identifier: CENAM/620-C002-013
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Metals and metal alloys for Mexico (.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 %
nickel lead 0.3 to 2 45 to 30
Mechanism(s) for measurement service delivery: Value-assignment through MRTC program
Approved on 31 March 2012.
Uncertainty convention 2.
Internal NMI service identifier: CENAM/620-Q018-3
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Organic solutions for Mexico (.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/g Absolute expanded uncertainty
(k = 2, 95%) in µg/g
organic solution heptachlor epoxide 40 to 1500 3 to 1 24283 0.0275
Mechanism(s) for measurement service delivery: DMR 277a
Uncertainty convention 2. Approved on 03 November 2006.
Internal NMI service identifier: CENAM/630-Q021-003
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for High purity chemicals for Mexico (.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 %
1-propanol 1-propanol 98 to 100 0.3 to 1 99.87 0.1
Mechanism(s) for measurement service delivery: Analytical service, DMR-165 x
Uncertainty range convention 1.
Approved on 03 November 2006.
Internal NMI service identifier: CENAM/630-C014-011
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Gases for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability
Amount of sustance fraction in µmol/mol Relative expanded uncertainty
(k = 2, 95%) in %
nitrogen nitrogen monoxide 1.0 to 1.5 1.4 to 2.0
Mechanism(s) for measurement service delivery: Program for value-assignment to gas mixture from producers (MRTC), calibration services and analytical services
Uncertainty convention 1.
Approved on 27 March 2013.
Internal NMI service identifier: CENAM/630-QS01.G014
Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Chemistry for Water for Mexico (.PDF file)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass concentration in mg/l Relative expanded uncertainty
(k = 2, 95%) in % 		Mass concentration in mg/l Absolute expanded uncertainty
(k = 2, 95%) in %
acidic (H2SO4) aqueous solution COD (expressed as reduction capacity of potassium biphthalate) 100 to 300 3 to 6 300 3
Mechanism(s) for measurement service delivery: DMR-6
Approved on 27 March 2013.
Uncertainty convention 1.
Internal NMI service identifier: CENAM/620-Q012-001