The Fixed-Angle Specular Reflectance Accessory enables you to obtain a spectrum of any flat, reflecting surface on plate or sheet material. Includes Flat Reference Mirror and three Aperture masks (2 mm, 5 mm, and 10 mm) This accessory is compatible with the Spectrum One/100/400/65, Spectrum Two, and Spectrum 3/Frontier spectrometers.

The Variable-Angle Reflectance Accessory allows measurement of reflectance spectra at angles of incidence between 15° and 80°. Includes Flat Reference Mirror and three Aperture masks (2 mm, 5 mm, and 10 mm). This accessory is compatible with the Spectrum 3/Frontier spectrometers.