Touch screen display lets you view spectra and run survey scans without a PC Display measurement values as ratios in either percent transmission or absorbance Single beam optical design provides dual beam capabilities Nitrogen purge not required—eliminate costly gases Connects easily to a computer or recorder. Display simultaneously indicates wavelength, transmittance or absorbance, scan type, scan time, and response time in seconds. Simply stated, this is the easiest IR spectrophotometer to operate and maintain. Advanced self-help menus guide you every step of the way. High energy optical design and a sensitive detector provides excellent resolution over the full infrared range. Single-button controls set all instrument parameters for operation and rapid data collection. Power: 115/230V, 50/60Hz.