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Sulphur Matrix Calibration Gas standards
PPM and PPB of concentrations of Various sulphur species components like,  
ComponentsConcentration (ppm mol/mol) 
Hydrogen sulphide 0.2 to 200 
Carbonyl sulphide 0.2 to 200 
Carbon disulphide 0.2 to 200 
Methanethiol (methyl mercaptan) 0.2 to 200 
Ethanethiol (ethyl mercaptan) 0.2 to 200 
Dimethyl sulphide 0.2 to 200 
1-propanethiol (n-propyl mercaptan) 0.2 to 200 
2-propanethiol (iso-propyl mercaptan) 0.2 to 200 
Ethyl methyl sulphide (methyl ethyl sulphide) 0.2 to 200 
1-butanethiol (n-butyl mercaptan) 0.2 to 200 
2-methyl-2-propanethiol (tert-butyl mercaptan) 0.2 to 200 
2-methyl-1-propanethiol (iso-butyl mercaptan) 0.2 to 200 
1-methyl-1-propanethiol (sec-butyl mercaptan) 0.2 to 200 
diethyl sulphide 0.2 to 200 
n-hexyl mercaptan 0.2 to 200 
tetrahydrothiophene (THT) 0.2 to 200 
Nitrogen or Helium or Methane (HC) Balance 
Natural Gas standards

Natural gas composition varies from source to source and often varies on a daily and seasonal basis. Using a calibration gas that is specifically designed for your application ensures that you will continue to achieve the best possible gas quality measurements. BHORUKA’s experienced staff possess over twenty years of experience in gas industry to design calibration gases to suit each customer’s specific requirements.

Maximising gas volume

Proposed designs will also maximise cylinder filling pressures, where appropriate, through gas liquid phase equilibrium calculations so you receive the highest gas volume possible within the required parameters.

Physical properties

Physical properties for all-natural gas and LNG calibration mixtures are included on certificates of calibration. These can be used for measurement confirmation as part of your quality control procedures and validation.

Physical properties of calorific value, relative density, real density, Wobbe index, mean molecular mass and compression factor are calculated from composition according to ISO 6976, GPA 2172 or ASTM D3588.

Addition of various other alkane, inorganic gas and aromatics components are possible, with respect  to composition feasibility in terms of vapor pressure, density & phase.

ComponentsCon (% mol/mol)Amount fraction (% mol/mol)
Nitrogen0.02 to 25± 0.5 % to ± 1 %
Carbon Dioxide0.05 to 25± 0.5 % to ± 1 %
Methane34 to 100± 0.5 % to ± 1 %
Ethane0.1 to 35± 0.5 % to ± 1 %
Propane0.05 to 20± 0.5 % to ± 1 %
iso-Butane0.01 to 2± 0.5 % to ± 1 %
n-Butane0.01 to 2± 0.5 % to ± 1 %
neo-Pentane0.001 to 0.5± 0.5 % to ± 1 %
iso-Pentane0.002 to 0.6± 0.5 % to ± 1 %
n-Pentane0.002 to 0.6± 0.5 % to ± 1 %
n-Hexane0.001 to 0.5± 0.5 % to ± 1 %
n-Octane0.0005 to 0.05± 0.5 % to ± 1 %
n-Nonane0.0001 to 0.02± 0.5 % to ± 1 %
n-Decane0.0001 to 0.005± 0.5 % to ± 1 %
Calibration Gas Standards for Refinery Gas Analysers (RGA)

Some of the compositions for RGA standards are as follows, Any other feasible combination can be supplied on request.

ComponentsCal Gas-1Vol%Cal Gas-2Vol%Cal Gas-2Vol%
Propylene6.0015.002.50
Iso-butane1.502.501.50
n- Butane3.001.000.50
1-Butene1.502.500.50
Iso-Butylene1.502.500.70
Trans-2- Butene1.502.000.70
Cis-2-Butene1.502.000.50
1,3-Butadiene1.002.000.05
2-Methyl-1-Butene1.002.000.25
3-Methyl-1-Butene0.000.000.10
2-Methyl-2-Butene0.000.000.30
Iso-Pentane1.502.501.00
n-Pentane1.002.000.20
1-Pentene0.000.000.20
Trans-2-Pentene0.000.000.20
Cis-2-Pentene0.000.000.10
n-Hexane0.000.000.20
Nitrogen65.0033.0083.25
Total100.00100.00100.00
LPG GAS STANDARDS

Various combination of LPG gas standards are used to Calibrate the Gas Chromatography in refinery labs. 

Sr. No.ComponentsConcentration ranges vol or mol %
1Methane0.02 to 0.08
2Ethane0.05 to 5
3Propane30 to 60
4Iso-Butane15 to 30
5N-Butane15 to 30
6Iso-Pentane1 to 10
7N-Pentane1 to 10
8Other C4s0.5 to 2.5
9Other C5s0.5 to 2.5

Any other feasible combinations can be blended and supplied as per your requirements.

Methanizer Calibration Gas Standards

Calibration gas mix of ppm of CO, CO2 & Methane balance Hydrogen E.g. 5 ppm each of CO, CO2 & Methane in Hydrogen with Accuracy of ±3 % and stability of 24 months.

Please send your required composition or process stream, we will suggest or recommend the suitable & feasible calibration gas standards for your applications.

Petrochemicals/ Polymer Plant Calibration Gas Standards

CALIBRATION GAS & LIQUID STANDARDS FOR BUTENE/BUTADIENE/AROMATICS PLANTS

  • Gas or liquid blends of C1/C2/C3C4/C5+ components like Methane, Ethane, Propane, Propylene, Ethane , Ethylene, Butanes, Pentanes, Acetylenes (Vinyl, Methyl, Ethyl, Propyl etc), 2-Butenes (Cis & trans), Pentenes
  • Liquid blends of BTEX, other aromatics & higher Alkanes (mol/mol , vol/vol & wt/wt)
  • Calibration gas and liquid blends for impurity profile in 1,3–Butadiene
  • Calibration gas and liquid blends for impurity profile in 1-Butene
  • Liquid blends for LPG (C1 to C6+)
  • Other customized liquid blends for Hydrocarbons
  • Other customized liquid blends for Sulphur in hydrocarbons available in Helium overpressure cylinder or constant pressure piston type sampling cylinders
    • Sulphur as Thiophene or Mercaptans in iso-Octane
    • Sulphur in Butanes
    • Sulphur in Propane
    • Sulphur in Ethylene/Propylene
  • Liquified LPG gas standard in constant pressure piston type sampling cylinders

Please send your required composition or process stream, we will suggest or recommend the suitable & feasible calibration gas standards for your applications.

Sr. No.ComponentsConcentration ranges vol or mol %
1Nitrogen0.10 % Mol/Mol
2n-Octane0.50 % Mol/Mol
3Carbon Dioxide1.0% Mol/Mol
4Methane1.0 % Mol/Mol
5n-Heptane1.0 % Mol/Mol
6iso-Pentane3.0 % Mol/Mol
7n-Hexane3.0 % Mol/Mol
8iso-Butane4.0 % Mol/Mol
9n-Pentane4.0 % Mol/Mol
10n-Butane8.0 % Mol/Mol
11Propane25.00 % Mol/Mol
12Ethane49.40 % Mol/Mol