Numerical analysis indicative of color and color variation in the same sample or between samples. The evaluation is carried out using a reflectance spectrophotometer, which determines the visible light reflection curve, in addition to the chromatic coordinates L*, a*, b* and ΔE*. The tool is useful for quality control, as it eliminates the subjectivity of visual color analysis. Furthermore, it can assist in the interpretation of degradation phenomena, stain formation, etc., which occur with color changes after various procedures (exposure to radiation, contact with water, chemicals or other staining agents).
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