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ISO 17223:2026
Plastics - Determination of yellowness index and change in yellowness index
This document specifies an instrumental method for determining the yellowness index and change in yellowness index on clear, translucent, or opaque plastics.
NOTE Change in yellowness index is often used to evaluate the effect of environment, e.g. heat, UV exposure, etc., on colour stability.
International Organization for Standardization [iso]
