AluWhite98’s aluminum oxide based material exhibits reflectance in excess of 98% over the visible-NIR range. AluWhite98 is available in both matte and gloss surface finishes. All standards are available with NIST/NRC traceable calibrations for 8°/hemispherical reflectance factor from 250 nm to 2500 nm.
The matte material Aluwhite98(m) is quite diffuse and has a slightly higher overall reflectance than the glossy version, AluWhite98(g). AluWhite98(g) is a better choice if the standard needs to be easily cleanable.
Both of these materials should be considered as a replacement for Russian Opal glass, which is no longer available.
|Finish||Matte or glossy|
|Calibration||Calibrated or uncalibrated|
|Dimensions||2” (50.8 mm) squares or 1.5” (38 mm) disks, either mounted or unmounted|
AluWhite 8°/Hemispherical Reflectance Factor
AluWhite 0°/45° Reflectance Factor