The ANCAL white diffuse reflectance standards are high quality standards for
white reference and target use. They can be used as a standard white for
color reference and for the calibration of optical instruments and photographic
equipment.
The reflectance material is of two types: Albrillontm, which
is accepted as the criterion white throughout the optical industry, and
Spectralon®, a newer, more robust material. Albrillontm
standard whites are available in 40 mm and 50 mm diameter sizes; Spectralon®
standards whites are in 50 mm diameter size. The standards come in a black
anodized aluminum sheath with a protective threaded cover. Each standard
is guaranteed to have between 97% and 100% reflectance.
Ceramic standards in white, red, yellow, green, and blue are available.
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