A report is presented which describes in detail work done on a project to construct and test a newly designed prototype parallel-cyclone particle sampler. The parallel multi-cyclone sampling train consists of five main units: the sampling box, two heat exchangers and two air flow control boxes. The system components are all constructed from corrosion-resistant materials. The prototype construction is discussed in detail. Prototype testing was divided into five separate tasks. First, the theoretical and experimental operational characteristics of the three cyclone types were compared; next, the manifold functioning was experimentally verified so that any necessary design modifications could easily be made before final assembly, operational tests were made on the individual cyclones prior to assembly into the sampling train; the assembled sampling train was tested using the wind tunnel under simulated wet scrubber conditions; and fifth, the sampling train was field tested at a wet limestone scrubbing facility. These five tasks are described in detail. Finally, a summary of results and developments is presented.

Prepared by Walter C. McCrone Associates, Inc. for the U.S. Environmental Protection Agency. "15 December 1972." "EPA-R2-73-220"--Printed on cover label. Microfiche.