For the most accurate measurement of an organisations contribution to air pollution stack or emmissions monitoring is required. Stack monitoring involves measuring gas concentration at the point of emission (stack).

These measurements can be coupled with ambient and background measurements to allow a better understanding of how emissions affect the local and broader environment. Stack emissions monitoring involves monitoring high concentrations of stack air such as CO, NO_X, SO₂ and others.

Stack gas air quality monitoring requires specially designed gas analyzers that are designed to mesaure high concentrations and can also be fitted with dilution equipment where necessary. Measurement of all gasses (SO₂, NO_X, CO, CO₂) occurs in the ppm range, gas analyzers must be able to measure at these levels accurately.

Ecotech offer the following stack emission monitoring instruments:

• CO₂ stack analyzer
• CO stack analyzer
• NO_X stack analyzer
• SO₂ stack analyzer