The ML9800 ambient air analyzers (Monitor Labs) measure the amount of trace gases such as carbon monoxide (CO) (ML9830B), ozone (O3) (ML9810B), sulfur dioxide (SO2) (ML9850B), and oxides of nitrogen (NO/NO2/NOx) (ML9841B), present in the atmosphere.

A PM Ambient Particulate Monitor (RP1400a,Thermo) measurers the concentration of PM present in the boundary layer.

A Total Non Methane Hydrocarbons Analyzer (TNMH 462, DANI ) measures the amount of non-methane hydrocarbons (NMHC).