RECENT DEVELOPMENTS ON THE BECKMAN IR-4 SPECTROPHOTOMETER

Author Institution: Beckman Instruments, Inc.A new optical null double beam, double monochromator infrared spectrophotometer has been designed. New features include a method for easy repetitive scan, higher resolution, and automatic control of wavelength scanning speed. New accessories, including a simple variable path cell and calcium fluoride interchange unit, have been developed and results obtained. Conventional beam size potassium bromide pellets have been examined