Reflection/backscatter probes are a compact, versatile sampling option to measure diffuse and specular reflectance, backscatter, or fluorescence from solids, solutions, and powders. The UV-Vis Probes work well for most general purpose applications (200- 1100nm) whereas the solarization resistant fiber probes extend into the deep UV region. The angled probes are designed to remove the specular component of reflection when measuring powders. Mixed probes are available to extend the spectral range. Probes with a reference leg can be used to provide more stable readings, by adding a reference spectrometer.