PCUK Applied Chemistry Research Center has practice in NAA and other nuclear methods since 1956. Its activity is too diverse to allow fundamental researches to be carried out. The Laboratory applies published methods to actual problems. In order to show the variety of topics some examples are given: contribution to metabolic studies of organic bromo-derivatives, analysis of high purity metals and alloys, test of leakage in distillation columns by tracer technique, industrial uses of²⁵² Cf sources.