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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
-
KCDB ID :
AFRIMETS-QM-EG-00000LH9-1
| 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
-
KCDB ID :
AFRIMETS-QM-EG-000000MT-1
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
KCDB ID :
AFRIMETS-M-EG-000006YH-1
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
KCDB ID :
AFRIMETS-M-EG-000006YM-1
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
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Direct Comparison with primary standard (JVS)
Temperature : 23 °C ± 2°C
Approved on 22 September 2017
Institute service identifier : 21.3.1
KCDB ID :
AFRIMETS-EM-EG-0000098C-1
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
KCDB ID :
AFRIMETS-TF-EG-0000060Z-1
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
KCDB ID :
AFRIMETS-M-EG-000006YY-1
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
KCDB ID :
AFRIMETS-M-EG-000006YR-1
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
KCDB ID :
AFRIMETS-M-EG-000006YQ-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
KCDB ID :
AFRIMETS-L-EG-00000K2I-1
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
KCDB ID :
AFRIMETS-L-EG-00000K2S-1
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
KCDB ID :
AFRIMETS-T-EG-00000MEL-1
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
KCDB ID :
AFRIMETS-M-EG-00000MQH-1
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
KCDB ID :
AFRIMETS-M-EG-00000MYQ-1
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
KCDB ID :
AFRIMETS-M-EG-00000N3A-1
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
KCDB ID :
AFRIMETS-M-EG-00000N38-1
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
KCDB ID :
AFRIMETS-M-EG-00000N6B-1
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
KCDB ID :
AFRIMETS-M-EG-00000N6E-1
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
KCDB ID :
AFRIMETS-M-EG-00000NF6-2
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
KCDB ID :
AFRIMETS-AUV-EG-00000NXZ-1
