Aerosols emitted from stationary sources constitute one of the most common and readily observable air pollutants currently being subjected to control measures. Further advancement in the particulate control state of the art will require basic information on the general behavior of particulates in flue gases. In addition, more sophisticated and automated instrumentation to test the performance of control equipment or compliance with air pollution regulations is needed. The research described concerns this new instrumentation. The report documents the results of a study to develop a preliminary or conceptual design for a particulate aerodynamic test facility. Basic features of other aerodynamic test facilities are reviewed, and features which are needed in the present design are identified. Engineering tradeoffs and technical considerations are presented. A detailed description of the final facility design is presented along with the controls and instrumentation.