Optical and Color

Smithers Rapra has the ability to measure the optical properties of materials and make detailed color measurement.

Color measurements are assessed against the CIE L*a*b scales which attribute numerical values to color and therefore allows easy comparison of colors and/or  color change. As detailed in the diagram below the L scale measures light vs dark, with the a scale measuring Red vs. Green and the b scale measuring Yellow vs. Blue.  

Standards and Accreditation 

Haze and Clarity measurements tend to be performed to ASTM D1003-07.