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Category Gas

H2O

In common parlance, water vapor is usually understood to mean the visible vapor clouds of condensed water vapor (wet vapor). Vapor plumes are visible because microscopic droplets (aerosols) have formed, as in clouds and fog. In technology and science, steam is the term for water in its gaseous state of aggregation. The content (concentration) is also referred to as humidity and is expressed in % relative humidity, absolute humidity (mg/m3 ) or vol.-% or ppm.Exhaust gases containing water vapor condense to form white exhaust gas plumes, i.e. “steam” escapes from the chimney. Sooty black or gray exhaust gases, on the…
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CL2

Chlorine is a chemical element. Together with fluorine, bromine, iodine, astatine and tenness, it belongs to the group of halogens. Elemental chlorine is present in gaseous form under normal conditions in the form of the diatomic molecule Cl2. It is one of the most reactive elements and reacts with almost all other elements and many compounds. The high reactivity also causes the toxicity of elemental chlorine.Chlorine, obtained almost exclusively by electrolysis, is used for the synthesis of chlorine-containing compounds such as vinyl chloride, a starting product for the production of the plastic PVC. Associated Products
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O3

Ozone is a molecule (O3) composed of three oxygen atoms (O) with a characteristic odor. Ozone molecules in the air decompose back to oxygen (O2) within a few days under normal conditions. Ozone is a powerful and toxic oxidant that can cause irritation of the respiratory tract and eyes and favor respiratory diseases in humans and animals. Ozone is used for cleaning and sterilization of surfaces. Ozone can be produced by low pressure plasmas and by electrical discharge. Associated Products
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H2S

Hydrogen sulfide (also hydrogen sulfide, dihydrogen sulfide,) is a malodorous, colorless, highly toxic gas. It is corrosive, flammable, highly combustible and slightly heavier than air. It is slightly soluble in water and slightly more soluble in ethanol. H2S is a very weak acid whose salts are the sulfides and hydrogen sulfides. Even in very low concentrations, hydrogen sulfide can be recognized by its typical rotten egg smell. It is formed, among other things, during the decomposition of sulfur-containing amino acids in biogas plants with concentrations of up to 10,000ppm. Associated Products  
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SO2

Sulfur dioxide is a colorless, mucous membrane-irritating, pungent-smelling and sour-tasting toxic gas. It is very soluble in water and forms sulfurous acid with water to a very small extent. It is formed, among other things, during the combustion of sulfur-containing fossil fuels such as coal or petroleum products. As a result, it contributes significantly to air pollution. Various processes exist for flue gas desulfurization. In addition, sulfur dioxide is found in the vicinity of active volcanoes. Associated Products
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NO2

Nitrogen dioxide is a reddish-brown, toxic, pungent chlorine-like smelling gas. The gas belongs to the group of nitrogen oxides and can be easily liquefied to N2O4 (dinitrogen tetraoxide) by increasing the pressure or cooling with dimerization. Nitrogen dioxide is used for the production of nitric acid. In trace amounts, nitrogen dioxide is formed from oxygen and nitrogen as the two main components of the atmosphere, both in natural processes such as lightning strikes and in technical combustion processes, e.g. in internal combustion engines. Associated Products
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SF6

Under normal conditions, sulfur hexafluoride is a colorless and odorless, non-toxic and non-flammable gas which, like nitrogen and CF4, behaves in an extremely inert manner. Sulfur hexafluoride (SF6) is used as an insulating gas in medium- and high-voltage technology, for example in gas-insulated switchgear (GIS) with high-voltage switches and in gas-insulated pipelines (GIL) in completely enclosed systems with operating voltages from 6 kV to 800 kV. SF6 also serves as an extinguishing gas to interrupt the switching arc in circuit breakers. Due to its high global warming potential (GWP=23500), this gas may only be used under strict conditions. Associated Products
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CF4

Tetrafluoromethane (also tetrafluorocarbon) is a chemical compound from the series of fluorocarbons. It is a colorless and odorless gas with a melting point of -184 °C and a boiling point of -128 °C. Tetrafluoromethane is very inert and is not attacked by acids and alkalis. It has a global warming potential of 7349, making it a potent greenhouse gas. Tetrafluoromethane is used as a refrigerant to replace CFCs because it has no depleting effect on the ozone layer. However, because of its high global warming potential, the F-Gas Regulation specifies that equipment using the gases in question should leak as…
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CnHm

This term covers all compounds containing carbon and hydrogen. The alkanes form a defined subgroup. Since the known measurement methods (NDIR, FID, PID,…) do not permit selective analysis of individual hydrocarbon compounds, a summary is always given. The weighting of the individual hydrocarbons is known for the respective measurement method. Associated Products  
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CH4

Methane is the simplest member of the alkane group (CnH2n+2). Under normal conditions, it is a colorless, odorless, flammable gas. Methane is insoluble in water and forms explosive mixtures with air. It burns in the presence of oxygen to form carbon dioxide and water. It occurs naturally as the main component of natural gas, among other things. Since it exists in large quantities in deposits, it is an attractive source of energy. Methane serves as a heating gas and is used in the chemical industry as a starting material for technical syntheses.The gas is produced in considerable quantities by biological…
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N2O

Nitrous oxide, commonly known by the trivial name laughing gas, is a colorless gas from the group of nitrogen oxides. In the literature, nitrous oxide is also referred to as nitrogen oxydul. Laughing gas is best known as an inhalation anesthetic. N2O is also produced in small quantities during the combustion of fossil fuels. Associated Products
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NO

Nitrogen monoxide NO is a colorless and odorless gas. It is formed during combustion processes of natural gas, crude oil and coal. In the ambient air, it reacts very quickly to form NO2, which is why the total value NOx is often given. Medically, nitric oxide has a dilating effect on blood vessels and is used for therapeutic purposes. It is approved as a drug and is added to the air we breathe up to a concentration of 20ppm. Associated Products
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