Standard Test Method for Rubber Deterioration—Heat and Ultraviolet Light Discoloration of Light-Colored Surfaces
1.1 This test method describes a technique to evaluate the surface discoloration of white or light-colored vulcanized rubber, that may occur on exposure to heat and ultraviolet radiation.
1.2 This test method also describes how to qualitatively evaluate the degree of discoloration produced under such conditions.
1.3 The term "discoloration" applies to a color change of the rubber sample, as distinguished from staining (see Note 1), that refers to a color change of a metal finish in contact with or adjacent to the rubber specimen.
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—Tests for staining are covered by Test Methods D 925.
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