Oxygen is a colorless and odorless gas. Oxygen makes up 21 percent of the atmosphere by volume. If the oxygen level drops below 17 percent, it becomes difficult for humans to breathe, and if it rises above 25 percent, it is highly flammable for many organic compounds. The element and its compounds make up 49 percent by mass of the earth's crust and about two-thirds of the human body.
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The largest commercial use of oxygen gas is in the steel industry. It is used in the manufacture of a wide variety of chemicals, including nitric acid and hydrogen peroxide. It is also used to make polyester, the precursor to PVC.
Oxygen gas is used in oxy-acetylene welding and metal cutting. There is also an increasing use of oxygen in the treatment of industrial wastewater.
When living things need energy, they take oxygen for respiration. Oxygen returns to the atmosphere in the form of carbon dioxide.
Oxygen alone does not burn, but is necessary for combustion. As long as there is enough fuel and oxygen, the fire continues to burn. Water-based extinguishers remove heat from a fire, carbon dioxide, and dry chemical extinguishers suffocate the fire, cutting off the oxygen supply.
Oxygen is the third most abundant element in the universe.
In the tests and analyzes carried out in our institution, which has a wide range of technological equipment, trained and experienced staff and applies the most modern methods, national and international standards and legal regulations in force are complied with. Among the numerous tests carried out in this context, there are also oxygen (O) testing services within the framework of elemental analysis.
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