This paper reported a review, calculations and measurements based study into Indirect Evaporative Cooling (IEC) stand device parts which have influence on thermal performance, which was undertaken from a variety of aspects including background, history, current status, concept, standardization, system configuration, operational mode, research and industrialization. Experimental stand device parts have been described as equations of heat and mass transfer in primary and secondary air and water flows. Model has been validated with Menerga Sorpsolair device measurements located in Riga Technical university laboratory. The main goal have been to made working stand device for future researches of IEAC device cooling efficiency, which mostly depends on mass flow rates ratios of primary and secondary air flows and spacing between plates of wet and dry passages.