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
Linear vibration , Voltage sensitivity (magnitude)
Acceleration measuring chain
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
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
Linear vibration , Charge sensitivity (magnitude)
Accelerometer
Relative expanded uncertainty : 0.8 %
Comparison, ISO 16063-21
Frequency : 5 Hz to 1 kHz
Velocity and displacement can be derived from acceleration
Approved on 27 December 2007
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
AC voltage (up to the MHz range) , AC voltage up to 1000 V: sources : 1.00E-3 V to 1000 V
Multifunction calibrator
Relative expanded uncertainty : 2.7E1 µV/V to 9.7E2 µV/V
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The expanded uncertainties given in this table are expressed in µV/V
AC/DC transfer standard
Frequency : 20 Hz to 1 MHz
Approved on 06 August 2013
Institute service identifier : INRIM/85_97
Measurements on materials , Soft magnetic sheet materials: value of magnetic field strength : 0.5 A/m to 1.00E4 A/m
Epstein, ring and single sheet sample
Relative expanded uncertainty : 4.0E-3 to 1.6E-2
{"row_1":{"col_1":"","col_2":"1 Hz to 10 Hz","col_3":"10 Hz to 1 kHz","col_4":"1 kHz to 10 kHz"},"row_2":{"col_1":"Expanded uncertainty","col_2":"4.00E-03","col_3":"1.00E-02","col_4":"1.60E-02"}}
The expanded uncertainties given in this table are relative values
Hysteresisgraph-wattmeter / ballistic setup (IEC 60404-2, IEC 60404-3, IEC 60404-4, IEC 60404-6, IEC 60404-10)
Frequency : DC to 10 kHz
Primary current : < 15 A
Approved on 06 January 2015
Institute service identifier : INRIM/243
Measurements on materials , Soft magnetic sheet materials: apparent power : 5.00E-3 VA/kg to 200 VA/kg
Epstein, ring and single sheet sample
Relative expanded uncertainty : 2.0E-2 to 8.0E-2
{"row_1":{"col_1":"","col_2":"1 Hz to 10 Hz","col_3":"10 Hz to 1 kHz","col_4":"1 kHz to 10 kHz"},"row_2":{"col_1":"Bp < Bp_mumax","col_2":"3.00E-02","col_3":"2.00E-02","col_4":"3.00E-02"},"row_3":{"col_1":"Bp > Bp_mumax","col_2":"8.00E-02","col_3":"5.00E-02","col_4":"5.00E-02"}}
The expanded uncertainties given in this table are relative values
Hysteresisgraph-wattmeter (IEC 60404-2, IEC 60404-3, IEC 60404-6, IEC 60404-10)
Frequency : 1 Hz to 10 kHz
Sample mass : > 0.1 kg
Primary current : < 15 A
Approved on 06 January 2015
Institute service identifier : INRIM/240a

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