Avian Technologies is equipped to perform measurements of regular and total transmittance at normal incidence and, in some cases, reflectance versus incidence angle for non-scattering samples.

Regular transmittance measurements are performed on a Perkin-Elmer 9/19 spectrophotometer with photomultiplier/lead sulfide detectors. Non-scattering samples up to 4" square can be measured from 200-3000 nm Scattering samples require an integrating sphere for collection of the scattered radiation. Depending on the size and scattering of the samples and the wavelength range needed, either a 60 mm or 150 mm integrating sphere accessory will be employed.