Environmental Gas Standards


MESA Specialty Gases & Equipment provides a number of Environmental Gas standards used to ensure environmental safety, compliance and meet regulatory requirements.  MESA Specialty Gases & Equipment produces environmental gases to meet the unique needs in the following areas:


bullet Standards for CEM and Stack Gas Monitoring
bullet Automotive Exhaust Emission Standards
bullet Ambient Air Monitoring Standards
bullet Low Level NO Mixtures
bullet EPA Protocol Gases


The following list indicates the most common components used in our mixtures.  If you do not see the component you require, please contact us to check availability:


bullet AMMONIA bullet OXYGEN




Air pollution is the presence of any chemical, physical (e.g. particulate matter), or biological agent that modifies the natural characteristics of the atmosphere. The atmosphere is a complex, dynamic natural gaseous system that is essential to support life on planet earth.


Enforced air quality standards, like the Clean Air Act in the United States, have reduced the presence of some pollutants. While major stationary sources are often identified with air pollution, the greatest sources of emissions are actually mobile sources, primarily cars. There are many available air pollution control technologies and urban planning strategies available to reduce air pollution; however, worldwide costs of addressing the issue are high.  




Air pollutants are classified as either directly released or formed by subsequent chemical reactions. A direct release air pollutant is one that is emitted directly from a given source, such as the carbon monoxide or sulfur dioxide, all of which are byproducts of combustion; whereas, a subsequent air pollutant is formed in the atmosphere through chemical reactions involving direct release pollutants. The formation of ozone in photochemical smog is the most important example of a subsequent air pollutant.



bullet Anthropogenic sources (human activity) related to burning different kinds of fuel. bullet Chemicals, dust and crop waste burning in farming,
bullet Combustion-fired power plants. bullet Fumes from paint, varnish, aerosol sprays and other solvents.
bullet Controlled burn practices used in agriculture and forestry management bullet Waste deposition in landfills, which generate methane
bullet Motor vehicles generating air pollution emissions. bullet Natural Sources
bullet Marine vessels, such as container ships or cruise ships, and related port air emissions bullet Dust from natural sources, usually large areas of land with little or no vegetation.
bullet Burning fossil fuels bullet Methane, emitted by the digestion of food by animals, for example cattle.
bullet Burning wood, fireplaces, stoves, furnaces and incinerators bullet Pine trees, which emit volatile organic compounds (VOCs).
bullet Other anthropogenic sources bullet Radon gas from radioactive decay within the Earth's crust.
bullet Oil refining, power plant operation and industrial activity in general. bullet Smoke and carbon monoxide from wildfires.
    bullet Volcanic activity, which produce sulfur, chlorine, and ash particulates.