The possibility to have a value in L * a * b, is done through the reading of a colorimeter and allows us to standardize the consistency and reproducibility of a color on different types of profile and material. Uniformity and reproducibility that are considered acceptable when the Delta E value is not higher than 4, on a single wet and between wet and wet, calculated as follows:

ΔE = √ ΔL² + Δa*² + Δb*²

because it is not possible to determine with the naked eye the “pass-and-not-pass”, varying also by the light factor. Therefore we turn to the use of a certified tool that calculates ΔE. It ‘s very important to define with customers that the color obtained by the Interference does not guarantee the constant color tone between materials with different extrusion origin; therefore, there must be 45 square meters per profile type to obtain a complete bath. If case there are not 45 square meters of profilr, the cost of the bath will be charged to the customer.

Important
Tones of various sets of samples are indicative because colors can vary according the alloy type used.
Initial samples, different geometry and different alloy make different colors.
The final color will be chosen and decided at the start of production.

Notice
Anodizing NECE reserves the right to change the actual set of samples without notice.

The customer is therefore required, periodically, to verify the color codes.