Specialty Gas Mixtures

CSL prepares certified calibration standards volumetrically as well as gravimetrically. Gravimetrically prepared mixtures are of very high accuracy, all the components are weighted using N.P.L.(National Physical Laboratory) certified weights and weighted with precession balance which has the accuracy up to 0.01 Grams. These mixtures prepared can have two, three or more components sometimes up to 10 to 35 (R.G.Mixtures) for various calibration, process control and pollution monitoring applications.

Each gas mixture is analyzed by instrumental and/or wet chemical methods and certification is given for composition.

Mixtures Of Lighting Industry

Use of pure inert mixtures contributes to the sophistication of light bulbs.  CSL has gained a reputation for producing and supply the best quality of gases to the Lighting manufacturers. 

•  Nitrogen in Argon

•  Krypton in Argon

•  Neon in Argon

•  Pure Krypton

•  Pure Neon

 Gases For Cement Industries                                                                              

•  05-10%  Oxygen in Nitrogen                                             

• 1-2% Carbon Monoxide in Nitrogen                                

•  5% Methane in Argon  (P-5)                                             

• 10% Methane in Argon (P-10)                                           

•  Ultra High Pure Nitrogen                                                

•  Low Carbon Monoxide and Oxygen in Nitrogen        

•   2% Hydrogen in Nitrogen                                              

Metallurgical Mixtures 

Traditionally, atmospheric mixtures are used to control the furnace environment for heat treatment, nitriding and other applications.  CSL offers you almost all the mixtures required for your applications.  Some of the compositions of gases are listed below:

• Hydrogen in Nitrogen

• Carbon Monoxide and Oxygen in Nitrogen

• CO2, CO, O2, H2, Air in Nitrogen

Gases For Petrochemicals & Refineries 

Accurate analysis of multi-component gas streams as well as control measurements of Petrochemical and Refineries require accurate Calibration Standards.  CSL meets this demand.  The composition of the mixtures available is practically infinite.  However, listed below are some: 

• 1% Carbon Monoxide + Nitrogen

• 0.8% Hydrogen + Nitrogen

• 30% Carbon Monoxide + Nitrogen

•  2.4% Methane + Air

•  4% Propane + Propylene

• 10% Propane + Propylene

•  Propylene + Hydrogen + Carbon Monoxide in the ratio of 1 : 1 : 1

• 1500 ppm Ethylene + 1500 ppm Hydrogen + 10% Propane + Propylene

• 100 ppm Ethane + 100 ppm Ethylene + 100 ppm  Propylene + 100 ppm Butane + Nitrogen

•  30% Propane + 1% Propylene + 20% iso-Butane + 0.5% iso-Pentane + Nitrogen

• 1% Methane + 1% Ethane + 1% Methane + 2% 1-Butene + 2% N-Butane + 30% Ethane + Propane

•  0.1% Ethylene + 0.5% Ethane + 0.5% Argon + 10% Methane + 10% CO + 20% CO2 + 20% Nitrogen + Hydrogen

•  0.1% Hexane + 0.1% Propylene + 0.1% Propadiene + 0.1% trans-2-Butene + 0.1% cis-2-Butene + 0.1% 1-3-Butadiene + 0.1%  I-Pentane + 0.2% Acetylene + 0.5% I-Butane + 0.5% N-Butane + 1% Nitrogen + 1% CO2 + 5% Propane + 10% Hydrogen + 10% Ethylene + 10% Ethane + Methane

Since the Vapour Pressure of many Hydrocarbons are very low, the mixtures of the same remain homogeneous at a low filling pressure.  CSL offers its expertise to design the composition of gas mixtures at maximum possible pressure.

Gases For Fertiliser Industry 

Accuracy of Process Control as well as the Quality of multi-component gas streams depends on the use of accurate reference gas mixtures.  The list of some of mixtures is given below.

• 15 % Methane + Nitrogen

• 10% Hydrogen + Helium

•  5 ppm Carbon Dioxide + 5 ppm Carbon Monoxide + Nitrogen

• 50 ppm Carbon Dioxide + 50 ppm Carbon Monoxide + 50 ppm Methane + 0.3% Argon + 24.5% Nitrogen + Hydrogen.

•  0.1% Carbon Dioxide + 0.2% Carbon Monoxide + 0.8% Methane + 3% Argon + 25% Nitrogen + Hydrogen

• 0.1% Ethylene + 0.3% Argon + 0.5% Ethane + 9.2% Methane + 9.5% Carbon Monoxide + 18.63% Carbon Dioxide + 19.17% Nitrogen + Hydrogen

• 0.1% I-Butane + 0.1% N-Butane + 0.1% Pentane + 0.1% N-Pentane + 0.1% Nitrogen + 1.5% Propane + 5% Carbon Dioxide + 7.2% Ethane + Methane

•  400 ppm Carbon Dioxide + 5 ppm Carbon Monoxide + 30 ppm Methane + Nitrogen

•  Zero Grade Nitrogen

 Laboratory Gases 

Special purity gases and the ever widening ranges of gas mixtures are being used to calibrate different instruments and analysers. CSL has been working closely with the users to design the pure and mixture gas specifications to match the specific requirement of each instrument. Furnished below are examples of some commonly used instruments and their requirements.

Explosimeter Calibration Gas Mixtures

Gas mixtures containing ½ LEL Methane, Butane or any other hydrocarbons, Balance Air.

Natural Gas Standards

Gas mixtures containing C₁-C₆, Carbon Dioxide, Nitrogen & Helium.

Transformer Oil Fault Gas Mixture

CSL manufactures analyzed gas mixtures of the gases typically associated with transformer fault such as H₂, CO, CO₂, CH₄, C₂H₆, C₂H₄, C₃H₈, C₂H₂.

Toxic Gas Mixture

Calibration Standards for detectors (H₂S, NH₃,Cl₂,HCl)

Blood Gas Analysis Mixtures

• 10% Carbon Dioxide + 90% Nitrogen

•  8% Carbon Dioxide + 92% Oxygen

•  5% Carbon Dioxide + 12% Oxygen + 83% Nitrogen

Exhaust Emission & Atmosphere

Pollution Control Gas Mixtures 

Awareness of the pollution in the atmosphere leads to the urge to control the same. The environment pollution monitoring instruments very often require low level calibration gas mixtures and high purity gases. Listed below are  some of the gases used in pollution control programs within the Automotive, Power Generation and Chemical Industry.

• 1800 ppm Propane + 6% Carbon Monoxide in Nitrogen

• 19000 ppm Propane + 8% Carbon Dioxide + 13% Carbon Dioxide in Nitrogen

•  5 ppm Carbon Monoxide + 5 ppm Carbon Dioxide in Nitrogen

•  200 ppm Carbon Monoxide + 500 ppm Sulphur Dioxide + 3000 ppm Carbon  Dioxide in Nitrogen

• 0.8 % Carbon Monoxide + 32 % Carbon Dioxide in Nitrogen

• 1 ppm Hydrocarbon + 1 ppm Carbon Monoxide + 1 ppm Nitric Oxide + 300 ppm Carbon Dioxide in Purified Air

• 1 ppm Hydrocarbon + 1 ppm Oxygen + 1 ppm Nitric Oxide + 300 ppm  Carbon Dioxide in purified Air

•  Fuel Gas  :  40% Hydrogen in Air

•                    40% Hydrogen in Helium

• 5 to 15% Carbon Dioxide + 0.9% to 8% Carbon Monoxide + 280 to 3000  ppm Propane in Nitrogen

•  Zero Grade Air

Automobile Emission Calibration Standard

Each gas is prepared by volumetric techniques with very close preparation tolerance and is analyzed by instrumental and 1 or wet chemical methods and is certified to the accuracies stated below: