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The object of this test method is to determine the staining formation on visible surfaces of EPDM elastomers of outer body weatherstrips, in case the EPDM is not furnished with a coating for the application.
This test method can provide data for
- qualification tests on different elastomers which are in question for a specific application (quality determination),
- comparison tests on different delivery batches of a specific elastomer compound (quality assurance).
Tests are performed preferably with the test pieces described in section 3.1.