DIN 53491 (1955-06)废止
Testing Of Plastics; Determination Of The Refractive Index And Dispersion
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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基本信息
标准编号： DIN 53491 (1955-06)
发布时间：1955/6/1 0:00:00
标准类别：Standard
出版单位：German Institute for Standardisation (Deutsches Institut für Normung)
标准页数：0
标准简介
As a physical constant the refractive index is valuable for distinguishing between plastics. By measuring the refractive index it is often possible to save tedious analytical work as the refractive index provides essential indications of the composition of a plastic, particularly if the test is carried out on polymeric and on cracked or depolymerized material.
等同采用的国际标准
ISO 489:1999 - Similar
