The 4100 ExoScan Is a handheld modulator that weighs 6.5 lb. which is seen in the lab, site or at home. It has flexible, innovative and durable characteristics and a variety of interchangeable sampling interfaces which enables efficiency as a handheld mid IR spectrometer. Can change in a few seconds in diffusion, grazing angle, specular reflection or spherical ATR sampling interfaces, without necessary realignments. It accommodates an array of sample types that includes infrared absorbing and scattering surfaces, as well as analysis of bulk materials including powders and granules. This device is utilized for impromptu measurements without compromising on quality.