<p><span lang="EN-GB">This document specifies an instrumental method for determining the yellowness index and change in yellowness index on clear, translucent, or opaque plastics.</span></p>
<p><span lang="EN-GB">NOTE Change in yellowness index is often used to evaluate the effect of environment, e.g. heat, UV exposure, etc., on colour stability.</span></p>
Registration number (WIID)
91100
Scope
<p><span lang="EN-GB">This document specifies an instrumental method for determining the yellowness index and change in yellowness index on clear, translucent, or opaque plastics.</span></p>
<p><span lang="EN-GB">NOTE Change in yellowness index is often used to evaluate the effect of environment, e.g. heat, UV exposure, etc., on colour stability.</span></p>
