As opposed to ceramic color tiles, which are characterized by a specular surface, Spectralon color standards are highly diffuse, thus simplifying measurement procedures by removing the effect of viewing geometry. Spectralon color standards are durable and maintain a consistent reflectance over time.

These properties - lambertian behavior, durability and stability - make Spectralon diffuse color standards the ideal choice for calibrating colorimeters and spectrophotometers.

All standards are calibrated spectrophotometrically in our state-of-the-art Reflectance Research Laboratory with standards traceable to national laboratories.

Data includes tristimulus values, chromaticity coordinates, UCS coordinates and CIELAB and CIELUV values.

Features

• Highly Diffuse
  Made of Spectralon diffuse reflectance material, these color standards offer exceptional reflectance properties that are nearly perfectly lambertian. Unlike ceramic tiles, Spectralon is independent of viewing geometry.
• Consistent Reflectance
  The reflectance of Spectralon color standards is extremely consistent and reproducible. This quality helps eliminate gross margins of color-dependent products such as paints or inks.
• Thermally Stable
  The high thermal stability of Spectralon color standards eliminates the need to rigorously control the temperature in the laboratory. The slight color change of the standards with increasing temperature is extremely gradual and easily monitored.
• Durable and Waterproof
  Spectralon color standards are durable, washable and easily machined without loss of color or surface texture. The standards retain uniformity throughout, despite daily exposure to harsh environments.  

Red, Green, Blue, Yellow	Cyan, Purple, Orange, Violet
View Typical Spectral Reflectance Factor for Diffuse Color Standards

Specifications and Ordering Information

Spectralon color standards are available either calibrated or uncalibrated (1.25 or 2.00 inch diameter), in a variety of configurations. The ordering information below describes the basic sets offered.

Set Part No.	No. Colors	No. Neutrals	Reflective Area (inches)	Description
CSS-04-010	4	0	1.25 D	red, green, blue, yellow
CSS-04-020	4	0	2.00 D	red, green, blue, yellow
CSS-04A-010	4	0	1.25 D	cyan, orange, purple, violet
CSS-04A-020	4	0	2.00 D	cyan, orange, purple, violet
CSS-08-010	4	4	1.25 D	red, green, blue, yellow, 99%, 75%, 50%, 2%
CSS-08-020	4	4	2.00 D	red, green, blue, yellow, 99%, 75%, 50%, 2%
CSS-08A-010	8	0	1.25 D	red, green, blue, yellow, cyan, orange, purple, violet
CSS-08A-020	8	0	2.00 D	red, green, blue, yellow, cyan, orange, purple, violet
CSS-12-010	8	4	1.25 D	above eight colors and 99%, 75%, 50%, 2%
CSS-12-020	8	4	2.00 D	above eight colors and 99%, 75%, 50%, 2%