ECP will attend the 5th edition of the workshop Expert’Labs that will take place at Fuveau near Aix-en-Provence in the south of France from June 21 to 22 2018. This workshop is dedicated to companies and research institutes being concerned with surfaces and interfaces in materials. Two presentations will be given by ECP, the first one is dealing with the evaluation of cleaning processes that are adapted to large optical structures and the second one concerns the study about contamination of sensitive parts from space industry coming from packaging materials.