Hello all, We are planning the construction of a clean room for MEMS polymer fabrication in Mexico City. I can not find information about if there is a standard way to determine the yellow light intensity in the lithography clean room areas. If somebody could give me an advice on this, it would be highly appreciated. Thanks so much Laura A. Oropeza Ramos, Ph.D. Posdoctoral Researcher IIMAS-Institute of Applied Mathematics and Systems UNAM Apartado Postal 20-726, Administración No. 20 Delegación Alvaro Obregón, México 01000, D.F. México