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CIPM MRA PARTICIPANTS
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General physics
Ionizing radiation
Chemical material
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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)
Egypt, NIS (National Institute for Standards)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/g Relative expanded uncertainty in % Mass fraction in mg/g Relative expanded uncertainty in %
water ethanol 0.1 to 10 2.2 to 0.7 0.2 to 5 2.2 to 0.7
  • Mechanism for measurement service delivery : NIS-CRM-ORG-01, NIS-CRM-ORG-02
  • Approved on 08 July 2020
  • Institute service identifier : RML-ORG-01
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 mg/kg Relative expanded uncertainty in %
cosmetic cream lead 0.2 to 100 2 to 1.3E1 5 to 100 1 to 5
  • Mechanism for measurement service delivery : CRM production and reference measurements
  • Approved on 19 June 2015
  • Institute service identifier : RML-IOR 02
Frequency , Frequency : 1 Hz to 1.20E8 Hz
Local frequency standard
Relative expanded uncertainty : 5.8E-13 Hz/Hz
Phase comparison
Measurement time : 1 d
Amplitude : 200 mV to 3.5 V (peak to peak)
Approved on 02 March 2012
Institute service identifier : NIS/TF05
Viscosity , Kinematic viscosity : 2.8 mm2/s2 to 97.94 mm2/s2
Newtonian liquids
Relative expanded uncertainty : 2.3 %
Capillary viscometer
Temperature : 20 °C to 25 °C
Approved on 19 October 2009
Mass , Mass : 1 mg to 100 mg
Mass standard
Absolute expanded uncertainty : 0.5 µg to 1.2 µg
Comparison in air
Uncertainty scales with measurand level. The volume of the mass standards is known.
Approved on 25 November 2010
Mass , Mass : 1 kg to 10 kg
Mass standard
Absolute expanded uncertainty : 9.5E-2 mg to 3 mg
Comparison in air
Uncertainty scales with measurand level. The volume of the mass standards is known.
Approved on 25 November 2010
Pressure , Gauge pressure : 2.00E5 Pa to 5.00E6 Pa
Pressure balance
Absolute expanded uncertainty
32 + 2.5E-05p

p pressure in Pa

The uncertainty is expressed in Pa
Liquid medium
Approved on 24 August 2009
Pressure , Gauge pressure : 1.00E4 Pa to 4.00E7 Pa
Pressure balance
Absolute expanded uncertainty
70 + 3.3E-05p

p pressure in Pa

The uncertainty is expressed in Pa
Gas medium
Approved on 24 August 2009
DC voltage (up to 1100 V) , DC voltage sources: single vaues : 1.018 V to 10 V
DC solid state voltage standard
Relative expanded uncertainty : 3.0E-2 µV/V to 0.2 µV/V
Uncertainty table
{"row_1":{"col_1":"","col_2":"Expanded uncertainty / (µV/V)"},"row_2":{"col_1":"1 V","col_2":"0.20"},"row_3":{"col_1":"1.018 V","col_2":"0.20"},"row_4":{"col_1":"10 V","col_2":"0.03"}}
Direct Comparison with primary standard (JVS)
Temperature : 23 °C ± 2°C
Approved on 22 September 2017
Institute service identifier : 21.3.1
Complex geometry , Surface texture : 0.15 µm to 11 µm
groove depth (step height) standard
Absolute expanded uncertainty : 3.0E1 nm to 1.7E2 nm
Q[30 nm,15E-3 h]
Stylus profilometery
ISO 3274 (1996) - Type-A
Surface  Parameters : step height
Approved on 19 July 2021
Institute service identifier : 63-C/T-4101
Radiations of the mise en pratique , Laser radiations : 778 nm
Frequency  Stabilized  laser vacuum wavelength
Absolute expanded uncertainty : 2.0E-2 fm
Optical beat frequency
O. Terra and H. Hussein, “An ultra-stable optical frequency standard for telecommunication purposes based upon the 5S1/2 → 5D5/2 two-photon transition in Rubidium”, Applied Physics B, 122: 27. doi:10.1007/s00340-015-6309-4 (2016).

O. Terra, “Absolute frequency measurement of the hyperfine structure of the 5S1/2 – 5D3/2 two-photon transition in rubidium using femtosecond frequency comb”, Measurement, Volume 144, (2019), Pages 83-87.
 
Approved on 12 March 2021
Institute service identifier : 61.C.003
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 660.323 °C
Thermocouple
Absolute expanded uncertainty : 0.35 °C
Pt/Pd
Approved on 19 November 2021
Fluid flow , Volume of liquid : 10 µL to 100 µL
Micropipettes or piston pipettes
Absolute expanded uncertainty : 0.35 µL
Gravimetric
Liquid : Water
Reference temperature : 20 °C
Approved on 13 September 2021
Institute service identifier : 11C003
Density , Density of liquid : 950 kg/m3 to 1850 kg/m3
Hydrometers
Absolute expanded uncertainty : 5.4E-2 kg/m3 to 7.4E-2 kg/m3
Cuckow method (Hydrostatic weighing)
Liquid temperature : 20 °C
Pressure : 101 kPa
‏
Approved on 11 May 2022
Institute service identifier : 13C010
Density , Density of solid : 7700 kg/m3 to 8400 kg/m3
Mass standard 1 kg
Absolute expanded uncertainty : 0.85 kg/m3
Hydrostatic weighing by weight comparison
Reference temperature : 20 °C
Approved on 11 May 2022
Density , Density of solid : 7700 kg/m3 to 8400 kg/m3
Mass standard 2 kg
Absolute expanded uncertainty : 0.83 kg/m3
Hydrostatic weighing by weight comparison
Reference temperature : 20 °C
Approved on 11 May 2022
Hardness , Hardness : 184 HV30 to 712 HV30
Hardness reference blocks
Absolute expanded uncertainty : 3 HV to 1.1E1 HV
Vickers HV 30
ISO 6507-3
Approved on 04 November 2021
Hardness , Hardness : 455 HV to 854 HV
Hardness reference blocks
Absolute expanded uncertainty : 7.3 HV to 1.4E1 HV
Vickers HV 120
ISO 6507-3
Approved on 04 November 2021
Mass , Mass : 100 kg
Mass standard
Absolute expanded uncertainty : 0.5 g
Comparison in air
Temperature : 18 °C to 27 °C
Approved on 25 October 2022
Institute service identifier : 13C020
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS1
Absolute expanded uncertainty : 0.1 dB (reference: 1 V/Pa)
Pressure reciprocity
IEC 61094-2:2009
Frequency : > 6.3 kHz to 8 kHz
Approved on 28 May 2022

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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.

Mass and related quantities

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

Photometry and Radiometry

Thermometry

Time and Frequency

Chemistry and Biology
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.