DIN 53491:1955-06
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
TESTING OF PLASTICS - DETERMINATION OF THE REFRACTIVE INDEX AND DISPERSION
Hardcopy , PDF
01-11-2002
English
01-01-1955
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.
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