Results for: Bulgarian Institute of Metrology
Filters
CMC Quick search Filters close;
?
Added keywords act as an additional filter. Keywords separated by a space will be treated by the logical function AND automatically. You may also use OR. Keyword searches also find close matches. Placing quotation marks (") before and after the search word, e.g. "word", will allow for exact matches.

In case of multiple search, please use ADVANCED SEARCH.
224 results
Reset all
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 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 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 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
Linear vibration , Acceleration : 1 m/s2 to 1000 m/s2
Acceleration measuring instrument
Relative expanded uncertainty : 2 %
Comparison, ISO 16063-21
Frequency : 6.3 kHz to 10 kHz
Approved on 18 October 2005
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
Hygrometers , Humidity : 10 %rh to 30 %rh
Other hygrometer
Absolute expanded uncertainty : 1.4 %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
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
Spectral properties of materials , Transmittance, regular, spectral : 0.1 to 1
Spectrally-neutral material
Relative expanded uncertainty : 0.65 %
Direct measuring with standard spectrophotometer
Wavelength : 400 nm to 700 nm
Bandwidth : 0.5 nm to 5 nm
Approved on 21 October 2001
DC resistance , DC resistance standards and sources: high values : 1.00E7 Ω to 1.00E9 Ω
Fixed resistor: R
Relative expanded uncertainty : 3.2 µΩ/Ω to 1.1E2 µΩ/Ω
{"row_1":{"col_1":"","col_2":"Expanded uncertainty"},"row_2":{"col_1":"10 Mohm","col_2":"3.2"},"row_3":{"col_1":"100 Mohm","col_2":"50"},"row_4":{"col_1":"1 Gohm","col_2":"110"}}
The expanded uncertainties given in this table are expressed in µΩ/Ω
Comparison by means of automated high resistance bridge
R : decade values
Measurements only at 23 °C in air bath
Approved on 06 August 2013
Institute service identifier : 75
Impedance (up to the MHz range) , Capacitance for dielectric capacitors : 0.01 µF to 1 µF
Fixed capacitor
Relative expanded uncertainty : 2.0E1 µF/F to 5.0E1 µF/F
{"row_1":{"col_1":"","col_2":"Expanded uncertainty in µF/F"},"row_2":{"col_1":"10 nF to 100 nF","col_2":"20 to 30"},"row_3":{"col_1":"200 nF to 1 µF","col_2":"50"}}
Comparison with capacitance bridge
Frequency : 1 kHz
Uncertainty is not varying linearly within the range.
Approved on 07 February 2019
Institute service identifier : 25
Impedance (up to the MHz range) , Inductance: self inductance, low values : 0.01 mH to 1 mH
Fixed inductor
Relative expanded uncertainty : 2.0E-2 H/H to 3.0E-4 H/H
Comparison with inductance bridge
Frequency : 1 kHz
Uncertainty is not varying linearly within the range
Approved on 06 August 2013
Institute service identifier : 26
High voltage and current , High DC voltage: ratios : 1.00E-5 to 1
High voltage resistive divider, DC high voltage probe
Relative expanded uncertainty : 2.0E-4
Comparison with reference divider
Input voltage : -100 kV to 200 kV
Approved on 06 August 2013
Institute service identifier : 91
Pressure , Negative gauge pressure : 1.00E4 Pa to 1.00E5 Pa
Pressure balance
Absolute expanded uncertainty
5E-04p

p pressure in Pa

The uncertainty is expressed in Pa

Gas medium
Uncertainty values range from 5 Pa to 50 Pa
Approved on 11 October 2005
Institute service identifier : EUR-BIM-M-043
Pressure , Absolute pressure : 2.00E4 Pa to 7.00E6 Pa
Pressure balance
Absolute expanded uncertainty
1E-04p

p pressure in Pa

The uncertainty is expressed in Pa

Gas medium
Uncertainty values range from 2 Pa to 7E+02 Pa
Approved on 11 October 2005
Institute service identifier : EUR-BIM-M-041
Frequency , Frequency : 1 MHz to 100 MHz
General frequency source
Relative expanded uncertainty : 2.0E-9 Hz/Hz
Direct frequency measurement
Averaging time : 100 s
Approved on 18 November 2009
Institute service identifier : BIM/2.2.1.3

Select Metrology Area

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.

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.