Christopher Clark, PhD, was hired as an application specialist, chemical and industrial processes, at optek-Danulat Inc., a Germantown, Wisc., maker of photometric systems for process automation. Clark will be responsible for process-scale inline photometry services to the chemical, water, wastewater, power, semiconductor and automotive industries. He was formerly regional business manager at Harris Data and has extensive research, leadership and consulting experience in the area of physical inorganic chemistry, in which he received a PhD at Johns Hopkins University.