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National standard of the unit of the molar fraction of atmospheric ecologically destructive components SO2 , NO, NO2 , H2S, CO2

The standard is produced and is in operation since 2010


  • gas-mixing and gravimetric sets;
  • a set of standard analytical equipment;
  • gas-analytical set: gas analyzers; chromatographs; IR Fourier spectrometer; standard gas mixtures in balloons


Metrological characteristics:

Component determined

Range of reproduction

of the molar fraction

unit size ,%


Relative extended

uncertainty of measurement

at unit reproduction, %, k=3


from to
Carbon dioxide(CO2) 10-4 - 30 1,5 0,5
Hydrogen sulfide (H2S)

10-3 - 10-2

10-2 - 0,5






Nitrogen oxide(NO) 10-3 - 0,5 1,0 0,5
Nitrogen dioxide(NO2) 10-3 - 0,5 1,0 0,5

Sulphur dioxide(SO2)

10-3 - 0,5 1,0 0,5


Sources of traceability:

FSUE “All-Russian Research Institute of Metrology named after D.I. Mendeleyev”, standard gas mixtures for environment, certified on the set of measuring equipment, that is a part of State primary standard of the unit of molar fraction and mass concentrationв of components in gas medium GET 154-01 of the Russian Federation.


Scope of application:

  • air protection;
  • control of working air at enterprises;
  • production of SSS of environmental purpose

The equivalency and reliability of the measurement results are confirmed with the participation in international comparisons with national standards of the leading countries of Europe in the sphere of gas-analytic control of the environment.

4 types of SSRS meant for environment protection have been registered as measurement devices of the Republic of Belarus. Their numbers are: № SSRS RB 2177-10, 2178-10, 2179-10, 2180-10


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