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Coating Colour Reports: SCI and SCE Are Different Measurement Modes
SCI includes the specular component in colour measurement; SCE excludes it. The modes can respond differently to surface appearance.
Updated · NANOLAB Knowledge
Practical approach
Record the mode and keep it consistent when comparing treated and reference samples.
A gloss-changing treatment can complicate interpretation if the baseline uses one mode and the final measurement uses the other.
Decision limits
Do not compare the numbers without their method context or choose a mode after seeing which result is more favourable.
Related guidance
- Standard Deviation vs Standard Error in Coating Test Reports
- Light Colour Temperature and Defect Visibility in Paint Inspection
- Coating Roughness Reports: Ra and Rz Describe Different Profile Features
- Coating Colour Difference: State Which Delta E Formula Was Used
Method reference: Konica Minolta: SCI and SCE colour measurement. References describe their stated methods or products; they do not certify NANOLAB products or establish compatibility with an unlisted surface.
Ask NANOLAB about the exact product and intended use. Use the current product documentation for formulation-specific instructions.
Continue reading
Standard Deviation vs Standard Error in Coating Test Reports
Distinguish standard deviation from standard error and label coating-test error bars so process variation is not hidden.
Light Colour Temperature and Defect Visibility in Paint Inspection
Different inspection lights can reveal different aspects of a finish. Keep the light setup identified when comparing polishing or coating results.
Coating Roughness Reports: Ra and Rz Describe Different Profile Features
Ra and Rz are different roughness parameters. Their values cannot be exchanged simply because both are reported in micrometres.