Spectrum Systems specializes in providing a variety of continuous emissions monitoring (CEM) systems. It serves a variety of clients, including electric utilities, pulp and paper manufacturers, waste and energy plants, and hazardous and pathological waste incinerators. Spectrum Systems offers a range of testing, maintenance, and data acquisition and reporting services. The company provides maintenance services through its professional staff assigned to specific customer sites. It offers comprehensive services, including repairs for complete instrument systems, gas analyzers, opacity monitors, printed circuit boards and emissions monitoring probes manufactured by various suppliers. In addition, Spectrum Systems performs precision machining and repairs of zirconium oxygen, dilution, and extractive sample probes.