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Chemical Analyte
Geographical location
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)
Kenya, KEBS (Kenya Bureau of Standards)
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 mg/kg Mass fraction in Absolute expanded uncertainty in
brown rice cadmium 0.2 to 0.5 7.0E-2 to 0.12
  • Mechanism for measurement service delivery : Provision of reference value for client samples
  • Microwave Plasma Atomic Emission Spectrometry used to determine cadmium mass fraction in rice after microwave digestion of the sample
  • Approved on 28 June 2016
  • Institute service identifier : 52-CCQM
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in mg/g Absolute expanded uncertainty in % Mass fraction in Absolute expanded uncertainty in
aqueous media ethanol 0.2 to 25 1.9 to 7.2
  • Mechanism for measurement service delivery : Reference measurement
  • Approved on 13 June 2013
  • Institute service identifier : IPS-Q11-04-2
Linear vibration , Frequency response (modulus) : 0.1 m/s2 to 200 m/s2
Acceleration measuring instrument
Relative expanded uncertainty : 1 %
ISO 16063-21:2003 (comparison)
Frequency : 10 Hz to 1 kHz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.6
Linear vibration , Voltage sensitivity (modulus)
Acceleration measuring chain/accelerometer
Relative expanded uncertainty : 2.2 %
ISO 16063-21:2003 (comparison)
Frequency : > 7.5 kHz to 10 kHz
Approved on 25 September 2018
Institute service identifier : KEBS/A2.6
Linear vibration , Charge sensitivity (modulus)
Acceleration measuring chain/accelerometer
Relative expanded uncertainty : 2 %
ISO 16063-21:2003 (comparison)
Frequency : > 5 kHz to 7.5 kHz
Approved on 25 September 2018
Institute service identifier : KEBS/A2.6
Linear vibration , Voltage sensitivity (modulus)
Acceleration measuring chain
Relative expanded uncertainty : 1.5 %
ISO 16063-21:2003 (comparison)
Frequency : >1 kHz to 5 kHz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.6
DC voltage (up to 1100 V) , DC voltage sources, single values : 1.018 V to 10 V
DC Voltage Standard
Relative expanded uncertainty : 0.4 µV/V to 0.8 µV/V
{"row_1":{"col_1":"Voltage Value (V)","col_2":"Expanded Uncertainty (µV/V)"},"row_2":{"col_1":"1.018","col_2":"0.8"},"row_3":{"col_1":"10","col_2":"0.4"}}
Direct Comparison with a group of solid state voltage standards
New entry
Approved on 12 April 2021
Linear vibration , Frequency response (modulus) : 0.1 m/s2 to 200 m/s2
Acceleration measuring instrument
Relative expanded uncertainty : 1.5 %
ISO 16063-21:2003 (comparison)
Frequency : >1 kHz to 5 kHz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.6
Linear vibration , Voltage sensitivity (modulus)
Acceleration measuring chain/accelerometer
Relative expanded uncertainty : 2 %
ISO 16063-21:2003 (comparison)
Frequency : > 5 kHz to 7.5 kHz
Approved on 25 September 2018
Institute service identifier : KEBS/A2.6
DC voltage (up to 1100 V) , DC voltage : 0.1 V to 1 V
Fluke 5730A Calibrator, Fluke 752A Reference Divider
Relative expanded uncertainty : 0.8 µV/V
{"row_1":{"col_1":"Voltage Value (V)","col_2":"Expanded Relative Uncertainty (µV/V)"},"row_2":{"col_1":"0.1","col_2":"0.8"},"row_3":{"col_1":"1","col_2":"0.8"}}
Voltage ratio
New entry
Approved on 12 April 2021
Linear vibration , Voltage sensitivity (modulus)
Acceleration measuring chain
Relative expanded uncertainty : 1 %
ISO 16063-21:2003 (comparison)
Frequency : 10 Hz to 1 kHz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.6
Linear vibration , Charge sensitivity (modulus)
Accelerometer
Relative expanded uncertainty : 1.5 %
ISO 16063-21:2003 (comparison)
Frequency : >1 kHz to 5 kHz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.6
Linear vibration , Charge sensitivity (modulus)
Accelerometer
Relative expanded uncertainty : 1 %
ISO 16063-21:2003 (comparison)
Frequency : 10 Hz to 1 kHz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.6
Linear vibration , Frequency response (modulus) : 0.1 m/s2 to 200 m/s2
Acceleration measuring instrument
Relative expanded uncertainty : 2 %
ISO 16063-21:2003 (comparison)
Frequency : > 5 kHz to 7.5 kHz
Approved on 25 September 2018
Institute service identifier : KEBS/A2.6
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS2P
Absolute expanded uncertainty : 4.0E-2 dB
IEC 61094-2:2009
Frequency : 40 Hz to 8 kHz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.1
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS2P
Absolute expanded uncertainty : 7.0E-2 dB
IEC 61094-2:2009
Frequency : 10 Hz to 31.5 Hz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.1
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS2P
Absolute expanded uncertainty : 7.0E-2 dB
IEC 61094-2:2009
Frequency : 10 kHz to 16 kHz
Approved on 30 June 2016
Institute service identifier : KEBS/A2.1
DC voltage (up to 1100 V) , DC voltage : 100 V to 1000 V
Fluke 5730A Calibrator, Fluke 752A Reference Divider
Relative expanded uncertainty : 0.6 µV/V to 2 µV/V
{"row_1":{"col_1":"Voltage Value (V)","col_2":"Expanded Relative Uncertainty (µV/V)"},"row_2":{"col_1":"100","col_2":"0.6"},"row_3":{"col_1":"1000","col_2":"2.0"}}
Voltage ratio
New entry
Approved on 12 April 2021
Linear vibration , Frequency response (modulus) : 0.1 m/s2 to 200 m/s2
Acceleration measuring instrument
Relative expanded uncertainty : 2.2 %
ISO 16063-21:2003 (comparison)
Frequency : > 7.5 kHz to 10 kHz
Approved on 25 September 2018
Institute service identifier : KEBS/A2.6
Linear vibration , Charge sensitivity (modulus)
Acceleration measuring chain/accelerometer
Relative expanded uncertainty : 2.2 %
ISO 16063-21:2003 (comparison)
Frequency : > 7.5 kHz to 10 kHz
Approved on 25 September 2018
Institute service identifier : KEBS/A2.6

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Acoustics, Ultrasound, Vibration

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

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

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