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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)
Italy, INRIM (Istituto Nazionale di Ricerca Metrologica)
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
fish tissue arsenic 3 to 10 3
  • Mechanism for measurement service delivery : Reference measurement
  • Approved on 08 July 2015
  • Institute service identifier : 01
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
polypropylene cadmium 10 to 100 1.8 to 2.4
  • Mechanism for measurement service delivery : Reference measurement
  • Approved on 19 June 2014
  • Institute service identifier : 01_07
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
synthetic air carbon dioxide 100 to 1000 0.4
  • Mechanism for measurement service delivery : Calibration of NDIR analysers
  • Approved on 22 October 2020
  • Institute service identifier : PT-QM-4.2-02b
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 carbon dioxide 100 to 1000 0.4
  • Mechanism for measurement service delivery : Calibration of NDIR analysers
  • Approved on 22 October 2020
  • Institute service identifier : PT-QM-4.2-02a
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
aluminium alloy chromium 200 to 2000 2 to 4
  • Mechanism for measurement service delivery : Reference measurement
  • Approved on 06 December 2011
  • Institute service identifier : 01_04
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
polypropylene chromium 100 to 1000 1.6 to 1.8
  • Mechanism for measurement service delivery : Reference measurement
  • Approved on 19 June 2014
  • Institute service identifier : 01_06
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
aluminium alloy iron 500 to 1.00E4 3 to 5
  • Mechanism for measurement service delivery : Reference measurement
  • Approved on 06 December 2011
  • Institute service identifier : 01_03
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
aluminium alloy manganese 100 to 2000 2.4 to 3.5
  • Mechanism for measurement service delivery : Reference measurement
  • Approved on 06 December 2011
  • Institute service identifier : 01_05
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
fish tissue selenium 1 to 10 2 to 6
  • Mechanism for measurement service delivery : Reference measurement
  • Approved on 08 July 2015
  • Institute service identifier : 02
Linear vibration , Acceleration : 10 m/s2 to 500 m/s2
Calibrator
Relative expanded uncertainty : 1.2 %
Comparison, ISO 16063-21
Frequency : 1.25 kHz to 10 kHz
Velocity and displacement can be derived from acceleration
Approved on 27 December 2007
Sound measuring instruments , Sound pressure response level : 90 dB (reference: 20 µPa) to 115 dB (reference: 20 µPa)
Sound level meter
Absolute expanded uncertainty : 0.15 dB
Pistonphone or pressure comparison
Frequency : 250 Hz, 1000 Hz
Approved on 27 December 2007
Measurement microphones , Pressure sensitivity level
Laboratory standard microphone type LS1
Absolute expanded uncertainty : 8.0E-2 dB
Pressure reciprocity IEC 61094-2:1992
Frequency : 10 kHz
Approved on 27 December 2007
Measurement microphones , Pressure sensitivity level
Working standard microphone
Absolute expanded uncertainty : 0.3 dB
Pressure comparison
Frequency : 10000 Hz to 12500 Hz
Approved on 27 December 2007
Spectral properties of materials , Transmittance, diffuse, spectral : 1.00E-3 to 1
Spectrally-neutral material
Relative expanded uncertainty : 5.2 % to 1.2 %
Spectrophotometer
Wavelength : 380 nm to 780 nm
Bandwidth : 2 nm
Specific measurement conditions : 0° incidence, diffuse plus regular
Approved on 21 October 2001
Photometry , Luminance : 1 cd/m2 to 1000 cd/m2
Tungsten-based source
Relative expanded uncertainty : 1.2 %
Integrating sphere source
Correlated colour temperature : 2800 K to 2900 K
Approved on 21 October 2001
Properties of detectors , Responsivity, spectral, irradiance
Broad band detector
Relative expanded uncertainty : 2.1 %
Comparison with spectral responsivity standards double grating monochromator
Wavelength : 600 nm to 800 nm
Bandwidth : 1 nm
Power level : 0.01 µW to 10 µW
Approved on 21 October 2001
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -90 °C to 0 °C
Liquid-in-glass thermometer
Absolute expanded uncertainty
0.02 + 1/2 graduation

The uncertainty is expressed in °C

Comparison
Stirred liquid bath : ethanol
Approved on 21 October 2001
Institute service identifier : INRIM/T/05/01
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 0 °C to 100 °C
Liquid-in-glass thermometer
Absolute expanded uncertainty
0.01 + 1/2 graduation

The uncertainty is expressed in °C

Comparison
Stirred liquid bath : water
Approved on 21 October 2001
Institute service identifier : INRIM/T/05/01
High voltage and current , High AC voltage: voltage transformer ratio error : 0 to 0.1
Voltage transformer
Absolute expanded uncertainty : 5.0E-5
Dedicated set-up for reference transformer calibration
Input voltage : 100 V to 100 kV
Output voltage : 5 V to 200 V
Frequency : 50 Hz
Approved on 07 February 2019
Institute service identifier : INRIM/173
High voltage and current , High voltage impedance: capacitance dissipation factor : 0 to 1.40E-3
Compressed gas capacitor, capacitor for high voltage
Absolute expanded uncertainty : 1.0E-5
Dissipation factor measuring circuit
Voltage : 1 kV to 50 kV
Frequency : 50 Hz
Approved on 06 August 2013
Institute service identifier : INRIM/166

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General physics
Acoustics, Ultrasound, Vibration

This metrology area covers the fields of acoustics, ultrasound and vibration.

Electricity and Magnetism

This metrology area covers the fields of DC and AC measurements, impedance, electric and magnetic fields, radiofrequencies and measurements on materials.

Length

This metrology area covers the fields of laser frequencies and dimensional metrology.

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This metrology area covers the fields of mass standards, force, pressure, density, hardness, torque, gravity and viscosity.

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Chemistry and Biology

This metrology area covers all fields relevant to chemistry and biology.

Ionizing radiation
Ionizing Radiation

This metrology area covers the fields of dosimetry, radioactivity and neutron measurements.