Apex Instruments Inc. offers a wide array of equipment and supplies for sampling stationary source emissions for pollutants in accordance with US EPA Reference Methods. Most of the methods are generally classified as either Isokinetic or Gaseous Sampling Methods. Apex Isokinetic Source Sampler systems let the operator monitor gas velocities, temperatures, pressures and sample flow rates for maintaining isokinetic sampling conditions. The Source Sampler system is easily adapted to test for a wide range of pollutants from staotinary sources, such as dust including particle size distribuons, metals, polychlorinated biphenyls (PCBs), dioxins/ furans, polycyclic aromac hydrocarbons (PAHs) and an ever increasing group of pollutants tested for with adaptations of this basic isokintiec test method.