Colour measurements

Despite its subjective and personal sensory nature, colour can be evaluated numerically. Among the various colour representation models, we use the CIE L*a*b* model, developed in 1976 by the International Commission on Illumination.

Colour measurement is important in countless industrial applications. In particular, we can mention controlling a surface treatment for aesthetic purposes, or inspecting the effect of solar radiation on the evolution of the colour of a material.

Some typical examples of applications:

• Monitoring the colour stability of electroplated coatings in each batch
• Laboratory ageing effect after UV test on leather
• Effect of sulfidation on the colour of silver items
• Comparison of several "black" DLC coatings
• Effect of laboratory UV exposure of watch dials