Avian Technologies offers first surface specular standards with calibrations traceable to NIST/NRC. The mirrors are first surface aluminum with a magnesium fluoride overcoat that have been aged to enhance their long term stability.
Standards come in a protective holder.
Hemispherical reflectance factor – Avian Technologies Front Surface Specular Standard
If you require measurements outside of the standard calibration data, we will be happy to refer you to one of our associates to provide additional measurements.