The Thermo Scientific Smart SAGA (Specular Apertured Grazing Angle) is ideal for grazing incidence analysis of sub-micron films on metallic substrates. Grazing angle reflectance is the technique of choice for analyzing thin coatings or deposits because the high angle of incidence increases pathlength of the infrared beam through the material of interest, significantly enhancing sensitivity. This accessory samples an average angle of 80 degrees from the normal. Analysis of films from 10 Angstroms to 0.5 microns is possible. A permanently mounted polarizer minimizes the ‘S’ polarized light which does not contribute to spectral data at the surface, increasing sensitivity and sampling speed. Samples are analyzed conveniently by placing them on a horizontal sampling surface and masked using a unique sliding aperture assembly.