Color measurement

Color measurements are used to assess color changes induced by various stresses.

The following characteristics of a specimen are measured or calculated in an automatic spectral photometer with the help of the CIELAB table system:

  • Transmittance
  • Reflectance
  • Yellowness index
  • L*a*b* values
  • Standard color values XYZ
  • Delta E
Automated test procedure Automated test procedure Automatic spectral photometer before the measurement Automatic spectral photometer before the measurement

 

Test specimen Optical sample sheet  
Basic dimensions 60 mm x 40 mm x d  
Thikness 2 mm 3 mm 4 mm
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