Gas Testing

Gas testing is used to detect and measure the concentrations of various, often hazardous or otherwise unwanted components in indoor air as well as fuel, process, and waste gases.

Importance of Gas Testing

Ensure safety in confined spaces.
Detect the presence of flammable gas or flammable vapors that can lead to fires or explosions.
Check if the oxygen content is at a safe level.
Detect the presence of harmful or toxic gas hazards.

Test Methods

Gas Chromatography (GC): GC is a common analytical technique to separate and measure the concentrations of each component in all types of gas samples from natural and biogas to indoor air. The combination of gas chromatography and mass spectrometry (MS) can be used to obtain more in-depth information on the gas's composition. Suitable for detection of inorganic gases such as hydrogen, oxygen, nitrogen, helium, carbon monoxide, and carbon dioxide, and organic gas such as methane, ethylene and acrylic.
Fourier Transform Infrared Technology (FTIR): FTIR, which is based on IR spectroscopy, is used in the analysis of the composition of gases.
Non-Dispersive Infrared Technology (NDIR): NDIR is used to measure the concentration of carbon monoxide, carbon dioxide, sulfur dioxide, ammonia, methane, ethylene, propane, acetylene, etc.
Evolved Gas Analysis (EGA): Thermogravimetric analyzer (TGA) is connected to a detector like GC or GC-MS to analyze gases evolved from a solid or liquid sample upon thermal decomposition. Other analyte-specific detectors may also be used.
Chemiluminescence Technology: Chemiluminescence is suitable for analysis of sulfide, nitrogen oxide, and ammonia.

Test Services

Indoor Air Quality Testing

STEMart provides various indoor air quality testing service for residential and commercial buildings to test / inspect parameters including temperature, humidity, carbon monoxide, contamination by microbes, particulates and volatile organic compounds etc.

Ambient Air Quality Testing

STEMart provides various ambient air quality testing service to show the presence of hazardous elements in the air which could be deleterious for health and environment.

Vehicle Exhaust Gas Testing

STEMart provides vehicle exhaust gas emission testing service to help users meet regulations for vehicle certification, engine refinement, and optimization of vehicle performance to meet lower CO₂ and pollutant requirements.

Ship Exhaust Gas Testing

STEMart provides ship exhaust gas testing service to confirm that if the exhaust gas emissions from ships are compliant with the limits set by international, national and local regulations.

Stack Emission Testing

STEMart provides a wide range of testing services on emission from DG set stack, flue gas stack, process stack, furnace stack, boiler stack, chimney, etc. to confirm that if the emissions are compliant with the limits set by international, national and local regulations.

For more information about our gas testing services, please contact us.