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Coating Colour Difference: State Which Delta E Formula Was Used
Delta E is not one universally interchangeable calculation. Different colour-difference formulas can produce different numerical results.
Updated · NANOLAB Knowledge
Practical approach
Record the formula, illuminant, observer and measurement conditions with the reported value.
A supplier's Delta E 2000 result should not be silently compared with a limit defined using an older formula.
Decision limits
Do not assign a universal visible-or-invisible threshold without considering the application and agreed method.
Related guidance
- What to Do with Towels Used for Ceramic Coating
- Detergent Residue in Towels Used on Ceramic Coating
- Coating Colour Checks: Read the Direction of Change, Not Only Delta E
- Ceramic Coating Fill Checks: Verify the Scale at the Working Load
Method reference: Konica Minolta: colour differences. 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
What to Do with Towels Used for Ceramic Coating
Separate used coating towels promptly and decide on cleaning, reassignment or disposal using the product's residue and safety guidance.
Detergent Residue in Towels Used on Ceramic Coating
Investigate towel laundering when a coated car shows recurring drying streaks despite a careful wash and rinse.
Coating Colour Checks: Read the Direction of Change, Not Only Delta E
A single colour-difference value describes magnitude but does not explain the direction of the change. Component differences provide additional context.