Features : Large LCD screen (128*64 Dots) with saving standard curve function. Imported & Environmental Deuterium lamp, preventing from Ozone inhalation. Adopted high-class grating with wholly hermetic light path design, to ensure the instrument has the superlow stray light. Pre-aligned design ensures the user can change lamps conveniently. Real-time monitoring the lifetime of Deuterium lamp and Tungsten lamp with advanced system.