US EPA Method 20

Method 20

Determination of Nitrogen Oxides, Sulfur Dioxide, and Diluent Emissions from Stationary Gas Turbines

The use of method 20 may be required by specific new source performance standards, clean air marketing rules, and state implementation plans and permits where measuring SO2, NOX, CO2, and/or O2 concentrations in stationary gas turbines emissions are required. Other regulations may also require its use.