The selection of control equipment without adequate knowledge about dust and gas involved leads to serious shortcomings and greater expenditure in future. Selection is governed by a blend of Technical, Commercial and Legal criteria together with experience.

The selection procedure is not achieved in a single step. Several considerations are made. Besides main equipment, selection of auxiliary equipments like Fan, dust conveying, dust disposal systems, etc. is equally important. Performance of auxiliary equipment largely influences the performance of control equipment. It may so happen that proper choice of Auxiliary equipment my change the entire choice of control equipment.

The Success of the control equipment is dependent on the right choice and on or good design and to achieve the same, it is important to have certain information to assess the type and design of control equipment best suited for a particular pollution problem.