Deuterium Lamp Assembly.The deuterium lamp assembly features a TruLife 1.5 Deuterium lamp, a mercury free digital elapsed time indicator, which measures the operating hours of the device, and a cable adapter. Caution: Eye protection is required when viewing deuterium, tungsten and xenon lamps when lit. Our long-lifetime deuterium and tungsten source lamps provide the best wavelength coverage across the working range of the spectrometer for consistently high performance. All lamps are pre-aligned and can be easily changed by anyone. Our extensive quality conrol and inspection process demands the very best quality sources to provide high snesitivity and stability for your key measurements.