Sulfur Dioxide (SO2) is the product of the combustion of sulfur compounds and causes significant environmental pollution. The main source of sulfur dioxide SO2 in the environment are from various industrial processes such as the burning of coal in power stations, the extraction of metals from ore and combustion of fuel within automobiles.

Sulfur dioxide is a noxious gas that can cause respiratory damage as well as impairing visibility when in high concentrations. Sulfur Dioxide also has the potential to form Acid rain (H₂SO₄) which causes health, environmental and infrastructural problems to human society.

The pollutants SO₂ is found in the ambient air as well as stack and naturally in background measurements. SO₂ is a requirement for most ambient air monitoring projects including being one of the 6 criteria pollutants required for measurement by the U.S. EPA.

Ecotech supply the following Sulfur Dioxide (SO₂) analyzers for the measurement of SO₂

• Serinus 50 SO₂ analyzer
• EC9850 SO₂ analyzer
• EC9850T SO₂ trace analyzer
• EC9850H SO₂ stack analyzer