Arti dan kegunaannya
4.1 White or light colored vulcanized rubber products or surfaces covered with organic finishes may discolor when exposed to wet, lembab, high temperature and sunlight conditions. This change in the color of the light-colored rubber surface repels consumers.

4.2 The results obtained should only be considered as indicative of the effect of irradiance from the specified source (UVA-340 lamp or xenon arc with daylight filter) and not equivalent to the result of any natural exposure, unless the degree of quantitative correlation of the relevant material has been established empirically.

4.3 The test method can be used for producer-consumer acceptance, adjudicative purposes and research and development work.

Radius
1.1 This test method covers techniques for evaluating surface discoloration of white or light-colored vulcanized rubber that may occur when subjected to UV or UV/visible light exposure from specified sources under controlled conditions of relative humidity, humidity and temperature.

ASTM D1148-2018 “Rubber Deterioration – Test Method for Fading of Light Colored Surfaces by Heat and Ultraviolet Light”

1.2 The test method also describes how to qualitatively assess the degree of discoloration produced in this case.

1.3 Syarat “perubahan warna” applies to a change in color of a rubber sample, as distinct from staining (Lihat Catatan 1), which refers to a change in color of a metal surface treated in contact with or adjacent to a rubber sample.

Catatan 1: The dye test is covered by test method D925.

1.4 Nilai yang dinyatakan dalam satuan SI harus dianggap standar. Nilai yang diberikan dalam tanda kurung hanya untuk referensi.

1.5 Standar ini tidak dimaksudkan untuk mengatasi semua masalah keselamatan, jika ada, terkait dengan penggunaannya. Merupakan tanggung jawab pengguna standar ini untuk menetapkan keselamatan yang sesuai, praktik kesehatan dan lingkungan dan untuk menentukan penerapan pembatasan peraturan sebelum digunakan.

1.6 Standar internasional ini didasarkan pada prinsip-prinsip standardisasi yang diakui secara internasional yang ditetapkan dalam Keputusan Prinsip-Prinsip Pengembangan Standar Internasional, Pedoman dan Rekomendasi yang dikeluarkan oleh Komite Hambatan Teknis Perdagangan Organisasi Perdagangan Dunia.