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CIPM MRA PARTICIPANTS
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Results for: bulgaria
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General physics
Ionizing radiation
Chemical material
Chemical Analyte
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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)
Bulgaria, BIM (Bulgarian Institute of Metrology)
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 9 to 9.4 4.0E-3 9 to 9.4 5.0E-3
  • Mechanism for measurement service delivery : Primary measurement of Borate buffer
  • Measurement temperature 15 °C to 37 °C, data given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention (approximately 0.010, k=2)
  • Approved on 01 October 2022
  • Institute service identifier : 1.6.c-1
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 9.8 to 10.2 8.0E-3 9.8 to 10.02 1.0E-2
  • Mechanism for measurement service delivery : Primary measurement of carbonate buffer
  • Measurement temperature 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention (approximately 0.010, k=2)
  • Approved on 01 October 2022
  • Institute service identifier : 1.6.c-2
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 6.7 to 7.6 4.0E-3
  • Mechanism for measurement service delivery : Calibration services, value assignment for proficiency testing scheme samples
  • Approved on 25 August 2020
  • Institute service identifier : 1.6.b-1
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 6.7 to 7.6 4.0E-3 6.7 to 7.6 4.0E-3
  • Mechanism for measurement service delivery : Primary measurement of phosphate buffer
  • Measurement temperature 15 °C to 37 °C, data given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention (approximately 0.010, k=2)
  • Approved on 01 October 2022
  • Institute service identifier : 1.6.b-1
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 1.5 to 1.9 1.0E-2 1.5 to 1.9 1.0E-2
  • Mechanism for measurement service delivery : Primary measurement of tetroxalate buffer
  • Measurement temperature 25 °C to 37 °C, data given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention (approximately 0.010, k = 2)
  • Approved on 12 October 2022
  • Institute service identifier : 1.6.a-1
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 1.5 to 1.9 1.0E-2
  • Mechanism for measurement service delivery : Calibration services, value assignment for proficiency testing scheme samples
  • Approved on 25 August 2020
  • Institute service identifier : 1.6.a-1
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 9.8 to 10.2 8.0E-3
  • Mechanism for measurement service delivery : Calibration services, value assignment for proficiency testing scheme samples
  • Approved on 25 August 2020
  • Institute service identifier : 1.6.c-2
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 3.6 to 4.2 5.0E-3
  • Mechanism for measurement service delivery : Calibration services, value assignment for proficiency testing scheme samples
  • Approved on 25 August 2020
  • Institute service identifier : 1.6.a-2
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 9 to 9.4 4.0E-3
  • Mechanism for measurement service delivery : Calibration services, value assignment for proficiency testing scheme samples
  • Approved on 25 August 2020
  • Institute service identifier : 1.6.c-1
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
pH in Absolute expanded uncertainty in pH in Absolute expanded uncertainty in
aqueous pH buffer solution 3.6 to 4.2 5.0E-3 3.6 to 4.2 5.0E-3
  • Mechanism for measurement service delivery : Primary measurement of Phthalate buffer
  • Measurement temperature 15 °C to 37 °C, data given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates - Guggenheim convention (approximately 0.010, k=2)
  • Approved on 01 October 2022
  • Institute service identifier : 1.6.a-2
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
blood serum copper 1 to 50 4.2 to 5
  • Mechanism for measurement service delivery : Reference measurement service and reference value assignment for PT
  • Approved on 15 October 2019
  • Institute service identifier : CHM 10
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS1P
Absolute expanded uncertainty : 0.18 dB
Pressure sequential comparison
Frequency : 5 kHz to 10 kHz
Approved on 18 October 2005
Sound measuring instruments , Free-field response level
Sound level meter
Absolute expanded uncertainty : 0.4 dB
Sequential comparison
Frequency : 63 Hz to 4 kHz
Approved on 18 October 2005
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 100 °C to 250 °C
Thermistors and other resistive thermometer
Absolute expanded uncertainty : 2.0E1 mK
Comparison
Stirred liquid bath : silicon oil
Approved on 03 November 2009
Institute service identifier : BIM/4.3
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 100 °C to 250 °C
Liquid-in-glass thermometer
Absolute expanded uncertainty : 2.5E1 mK
Comparison
Stirred liquid bath : silicon oil
Approved on 03 November 2009
Institute service identifier : BIM/7.4
Hygrometers , Humidity : 50 %rh to 90 %rh
Relative humidity sensors
Absolute expanded uncertainty : 2 %rh
Comparison in a climatic chamber
Air temperature : 20 °C to 50 °C
Approved on 17 August 2017
Institute service identifier : BIM/3.3.1
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 250 °C to 650 °C
IPRT
Absolute expanded uncertainty : 0.1 °C to 0.6 °C
Comparison
Furnace : metal block
Approved on 03 November 2009
Institute service identifier : BIM/3.4
Hygrometers , Humidity : 50 %rh to 90 %rh
Other hygrometer
Absolute expanded uncertainty : 2.2 %rh
Comparison in a climatic chamber
Air temperature : 1 °C to 20 °C
Approved on 17 August 2017
Institute service identifier : BIM/3.3.1
Hygrometers , Humidity : 30 %rh to 50 %rh
Other hygrometer
Absolute expanded uncertainty : 1.8 %rh
Comparison in a climatic chamber
Air temperature : 1 °C to 20 °C
Approved on 17 August 2017
Institute service identifier : BIM/3.3.1
Items for defining ITS-90 , Temperature : 234.3156 °C
Capsule-type SPRT
Absolute expanded uncertainty : 0.5 mK
Calibration at mercury triple point
Mercury apparatus
Approved on 27 March 2014
Institute service identifier : BIM/2.1

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Acoustics, Ultrasound, Vibration

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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.