Results for: Switzerland "METAS"
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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)
Switzerland, METAS (Federal Institute of Metrology)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Charge concentration in fC/cm3 Absolute expanded uncertainty in % Charge concentration in Absolute expanded uncertainty in
air airborne particles 1 to 3 2
  • Mechanism for measurement service delivery : Calibration
  • Soot particle size: 20 nm to 500 nm.
  • Approved on 08 July 2015
  • Institute service identifier : 235-2
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Number concentration in cm-3 Absolute expanded uncertainty in % Number concentration in Absolute expanded uncertainty in
air airborne particles 100 to 2.00E4 3 to 5
  • Mechanism for measurement service delivery : Calibration
  • Soot particle size: 23 nm to 500 nm.
  • Approved on 08 July 2015
  • Institute service identifier : 235-1
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 in % Amount-of-substance fraction in % Absolute expanded uncertainty in %
nitrogen ammonia 10 to 100 1.1E1
  • Mechanism for measurement service delivery : Calibration of binary gas mixtures or gas mixture generating devices
  • Approved on 04 April 2022
  • Institute service identifier : 232-9
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount of substance fraction in mmol/mol Relative expanded uncertainty in % Amount of substance fraction in
nitrogen carbon dioxide 10 to 200 0.35
  • Mechanism for measurement service delivery : Calibration of gas mixtures
  • Approved on 22 October 2020
  • Institute service identifier : 232-3 rev.
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 Absolute expanded uncertainty in nmol/mol Amount-of-substance fraction in Absolute expanded uncertainty in
nitrogen carbon monoxide 10 to 1000 6 to 1.0E1
  • Mechanism for measurement service delivery : Calibration of pure nitrogen
  • Approved on 08 July 2015
  • Institute service identifier : 232-11
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 in % Amount of substance fraction in
nitrogen carbon monoxide 1 to 200 1 to 0.6
  • Mechanism for measurement service delivery : Calibration of gas mixtures
  • Approved on 22 October 2020
  • Institute service identifier : 232-1 rev.
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount of substance fraction in mmol/mol Relative expanded uncertainty in % Amount of substance fraction in
nitrogen carbon monoxide 1 to 50 0.4
  • Mechanism for measurement service delivery : Calibration of gas mixtures
  • Approved on 22 October 2020
  • Institute service identifier : 232-2 rev.
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in g/kg Relative expanded uncertainty in % Mass fraction in
water ethanol 0.5 to 5 0.35
  • Mechanism for measurement service delivery : Gravimetric preparation and value assignment by quantitative HPLC-RID
  • Approved on 22 October 2020
  • Institute service identifier : 232-12
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Airborne Particle Number Concentration in cm-3 Relative expanded uncertainty in % Airborne Particle Number Concentration in % Absolute expanded uncertainty in %
dry air monodisperse polystyrene latex spheres with nominal diameter ranging from 0.3 μm to 1.5 μm 0.5 to 800 6.3 to 4.2
  • Mechanism for measurement service delivery : Calibration of optical and aerodynamic particle counters and size spectrometers
  • Approved on 28 June 2022
  • Institute service identifier : 235-3
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Airborne Particle Number Concentration in cm-3 Relative expanded uncertainty in % Airborne Particle Number Concentration in % Absolute expanded uncertainty in %
dry air monodisperse polystyrene latex spheres with nominal diameter ranging from >1.5 μm to 10.0 μm 0.5 to 5 7.3
  • Mechanism for measurement service delivery : Calibration of optical and aerodynamic particle counters and size spectrometers
  • Approved on 28 June 2022
  • Institute service identifier : 235-4
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 in % Amount-of-substance fraction in % Absolute expanded uncertainty in %
nitrogen nitrogen dioxide 10 to 100 1.5
  • Mechanism for measurement service delivery : Calibration of gas mixtures and instruments
  • Approved on 15 June 2022
  • Institute service identifier : 232-10
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 Absolute expanded uncertainty in % Amount-of-substance fraction in Absolute expanded uncertainty in
nitrogen nitrogen monoxide 100 to 1.00E4 2 to 0.5
  • Mechanism for measurement service delivery : Calibration of gas mixtures and measuring instruments
  • Approved on 08 July 2015
  • Institute service identifier : 232-7a
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 Absolute expanded uncertainty in % Amount-of-substance fraction in Absolute expanded uncertainty in
nitrogen nitrogen monoxide 30 to 150 1
  • Mechanism for measurement service delivery : Calibration of gases mixtures
  • Approved on 27 March 2013
  • Institute service identifier : 232-7rev1
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 Absolute expanded uncertainty in nmol/mol Amount-of-substance fraction in Absolute expanded uncertainty in
purified air ozone 1 to 1000
  • Uncertainty equation CMC : Q[1.1, 0.022 x(O3)]

    The uncertainty is expressed in nmol/mol

  • Mechanism for measurement service delivery : Instrumental comparison against primary UV photometer
  • The notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a2 + b2]1/2
  • Approved on 08 July 2015
  • Institute service identifier : 232-8
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 in % Amount of substance fraction in
nitrogen propane 100 to 4000 0.4
  • Mechanism for measurement service delivery : Calibration of gas mixtures
  • Approved on 22 October 2020
  • Institute service identifier : 232-4 rev.
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 in % Amount-of-substance fraction in
nitrogen or synthetic air water 5 to 15 2.5
  • Mechanism for measurement service delivery : Calibration
  • Approved on 15 October 2019
  • Institute service identifier : 232-13
Ear simulators , Sound pressure level : 40 dB (reference: 20 µPa) to 140 dB (reference: 20 µPa)
Reference coupler system, artificial ear system
Absolute expanded uncertainty : 0.3 dB
ISO 389, IEC60645
Frequency : 125 Hz to 8 kHz
Microphone type : WS2P
Approved on 18 October 2005
Sound calibrators , Sound pressure level : 70 dB (reference: 20 µPa) to 115 dB (reference: 20 µPa)
Sound calibrator, multi-frequency
Absolute expanded uncertainty : 0.16 dB
Calibrated measurement microphone
Frequency : 4 kHz to 12.5 kHz
Microphone type : LS2P
Approved on 18 October 2005
Sound calibrators , Sound pressure level : 70 dB (reference: 20 µPa) to 130 dB (reference: 20 µPa)
Pistonphone or sound calibrator, single frequency
Absolute expanded uncertainty : 8.0E-2 dB
Calibrated measurement microphone
Microphone type : LS2P
Approved on 18 October 2005
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS1
Absolute expanded uncertainty : 5.0E-2 dB
Reciprocity calibration IEC 61094-2:1992
Frequency : 125 Hz to 2 kHz
Approved on 18 October 2005

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