CCTL analyze the pigments and dyes in historical artifacts and works of art to authenticate them and identify their age and place of origin. These workers look for materials that are compatible with older dyes and pigments to preserve and restore valuable objects.

Typical work duties include the following:

• Oil absorption (ml/100g) %

• PH Value

• Viscosity at 25.deg. C

• Density at 25. deg. C (g/cm3)

• Light Fastness

• Heat Resistance

• Water Resistance

• Acid Resistance

• Alkali Resistance