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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)
Kazakhstan, KazStandard (Kazakhstan Institute of Standardization and 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 buffer solution 9.17 to 9.19 3.0E-3 9.178 to 9.184 3.0E-3
  • Mechanism for measurement service delivery : CRM: KZ.03.01.00289-2011 Disodium tetraborate decahydrate. Calibration
  • Borate buffer solution. Temperature range for the service: data is given for 25 °C. Declared uncertainties do not include the uncertainty contribution due to the Bates-Guggenheim convention
  • Approved on 19 June 2015
  • Institute service identifier : 9-003U
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mol/mol Absolute expanded uncertainty in mol/mol
nitrogen carbon dioxide 0.04 to 0.16 1.5 0.04 to 0.16 1.5
nitrogen carbon monoxide 5.00E-3 to 0.05 1.5 5.00E-3 to 0.05 1.5
nitrogen propane 1.00E-4 to 3.00E-3 1.5 1.00E-4 to 3.00E-3 1.5
  • Mechanism for measurement service delivery : PRM, SRMs plus calibration
  • Calibration service involves calibration of gas mixtures of known composition against primary standards on regular basis
  • Approved on 27 May 2020
  • Institute service identifier : KazInMetr/4.2.1
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
nitrogen or air carbon monoxide 1.00E-3 to 0.01 2.2 1.00E-3 to 0.01 2.2
  • Mechanism for measurement service delivery : PRM, SRMs plus calibration
  • Calibration service involves calibration of gas mixtures of known composition against primary standards on regular basis
  • Approved on 27 May 2020
  • Institute service identifier : KazInMetr/4.2.3
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mol/mol Relative expanded uncertainty in %
nitrogen oxygen 0.05 to 0.3 0.3 0.05 to 0.3 0.3
  • Mechanism for measurement service delivery : PRM, SRMs plus calibration
  • Calibration service involves calibration of gas mixtures of known composition against primary standards on regular basis
  • Approved on 27 May 2020
  • Institute service identifier : KazInMetr/4.2.2
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in mmol/mol Relative expanded uncertainty in %
nitrogen propane 0.1 to 5 1.5 0.1 to 5 1.5
  • Mechanism for measurement service delivery : PRM, SRMs: KZ.03.01.00113-2009, KZ.03.01.00526-2015, KZ.03.01.00539-2015, KZ.03.01.00540-2015, KZ.03.01.00541-2015, KZ.03.01.00543-2015 plus calibration
  • Calibration service involves calibration of gas mixtures of known composition against primary standards on regular basis
  • Approved on 27 May 2020
  • Institute service identifier : KazInMetr/4.2.4
Mass , Mass : 0.1 kg to 1 kg
Mass standard
Absolute expanded uncertainty : 1.6E1 µg to 1.2E2 µg
Subdivision method
Temperature : 17.5 °C to 22.5 °C
Relative humidity : 40 % to 60 %
Uncertainty scales with measurand level. The volume of the mass standards is known
Approved on 10 September 2014
Mass , Mass : 1 kg to 10 kg
Mass standard
Absolute expanded uncertainty : 0.12 mg to 1.6 mg
Direct comparison
Temperature : 17.5 °C to 22.5 °C
Relative humidity : 40 % to 60 %
Uncertainty scales with measurand level. The volume of the mass standards is known
Approved on 10 September 2014
Hardness , Hardness
Hardness Block
Absolute expanded uncertainty : 0.7 HRN
Rockwell N according ISO 6508:3 and GOST 22975
Preliminary test force : 29.42 N
Total test force : 147.1 N to 441.3 N
According to ISO 6508:1 and GOST 22975.
Approved on 16 April 2010
Radiations of the mise en pratique , Laser radiations : 633 nm
Frequency stabilized laser: vacuum wavelength
Absolute expanded uncertainty : 4.0E-2 fm
Optical beat frequency
Approved on 14 November 2012
Form , Straightness standards : 0 µm to 50 µm
Straightness edge: straightness deviation
Absolute expanded uncertainty : 0 µm to 0.8 µm
0.2L L in m
The uncertainty is expressed in µm
(see Parameter)
Comparison with straight edge: autocollimators
Length L : up to 4 m
Approved on 22 February 2021
Institute service identifier : COO-L-KazInMetr 1431
Hardness , Hardness Brinell : 150 HBS(W) to 450 HBS(W)
Hardness test block, according to ISO 6506:1
Absolute expanded uncertainty : 1.2 HBS(W) to 3.6 HBS(W)
Brinell HBW 10/3000/15 according to ISO 6506:3
Test force : 29420 N
Approved on 31 August 2021
Hardness , Hardness Brinell : 75 HBS(W) to 125 HBS(W)
Hardness test block, according to ISO 6506:1
Absolute expanded uncertainty : 0.8 HBS(W)
Brinell HBW 10/1000/15 according to ISO 6506:3
Test force : 9807 N
Approved on 31 August 2021
Photometry , Luminous intensity : 100 cd to 1000 cd
Tungsten lamp
Relative expanded uncertainty : 0.8 % to 1.6 %
Photometric bench and reference lamps/photometer
Correlated colour temperature : 2800 K to 2900 K
Approved on 27 September 2021
Institute service identifier : ST KazStandard 35
Hardness , Hardness
Hardness Block
Absolute expanded uncertainty : 0.5 HRA
Rockwell A according ISO 6508:3 and GOST 9013
Preliminary test force : 98.07 N
Total test force : 588.4 N
According to ISO 6508:1 and GOST 9013.
Approved on 16 April 2010
Radiations of the mise en pratique , Laser radiations : 633 nm
Frequency stabilized laser: vacuum wavelength
Relative expanded uncertainty : 1.0E-9
Optical beat frequency
Approved on 14 November 2012
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 419.527 °C
Thermocouple (type R and S)
Absolute expanded uncertainty : 0.3 °C
Calibration at zinc fixed point
Temperature-controlled furnace : 3 zone
Approved on 15 November 2016
Institute service identifier : KazInMetr/6
Items for defining ITS-90 , Temperature : 0.01 °C
Water triple point cell
Absolute expanded uncertainty : 0.15 mK
Direct comparison
Thermostat : ice bath
Approved on 06 September 2013
Institute service identifier : KazInMetr/1
Impedance (up to the MHz range) , Capacitance for low loss capacitors : 10 pF to 100 pF
Standard capacitor
Relative expanded uncertainty
{"row_1":{"col_1":"","col_2":"Expanded uncertainty in µF/F"},"row_2":{"col_1":"10 pF","col_2":"0.72"},"row_3":{"col_1":"100 pF","col_2":"0.84"}}
0.72 to 0.84

The uncertainty is expressed in µF/F

Digital transformer bridge by direct measurement
Frequency : 1 kHz
Temperature : (20 ± 0.5) °C
Approved on 29 May 2017
Institute service identifier : KazInMetr/EM-K4
Viscosity , Viscosity : 1000 mm2/s
Newtonian liquids
Relative expanded uncertainty : 0.4 %
Reference liquids
Temperature : 20 °C
Approved on 21 October 2001
Viscosity , Viscosity : 100 mm2/s
Newtonian liquids
Relative expanded uncertainty : 0.32 %
Reference liquids
Temperature : 20 °C
Approved on 21 October 2001

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