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ASTM D4449-15(2021) 《Standard Test Method for Visual Evaluation of Gloss Differences Between Surfaces of Similar Appearance》 Related products

This standard describes a method for visually assessing Gloss differences on coated surfaces using a special Light source. Helps detect and analyze the distribution and intensity of light reflected from a surface by providing a strong pattern of chiaroscuro contrasts. The method defines six types of Glossiness and is able to distinguish four levels of Gloss difference for accurately assessing small changes in surface Gloss.

This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
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