本文件规定了透明且基本无色的塑料中雾度的测量方法，雾度是光的广角散射产生的光学特性。该方法适用于测量小于40%的雾度值。 注？可以测量磨损或磨砂透明塑料的雾度，但由于窄角度内的光散射，获得的值可能会错误地低于真实值。

This document specifies a method for the measurement of haze, an optical property resulting from wide-angle scattering of light, in transparent and substantially colourless plastics. This method is applicable to the measurement of haze values of less than 40 %. NOTE      The haze of abraded or matted transparent plastics can be measured, but the value obtained can be erroneously lower than the true value due to light scattering within a narrow angle.