GB/T 23987.3-2025 in English

This standard provides guidelines for the exposure of paint and clear coatings in a laboratory setting using fluorescent ultraviolet lamps. It outlines the procedures necessary to simulate the effects of sunlight on these materials, ensuring consistent and reproducible results. The document specifies the equipment required, the conditions under which the exposure should take place, and the methods for evaluating the performance of the coatings after exposure. It is designed to support testing in various industries where the durability of coatings under UV radiation is a critical factor. The standard also includes details on the preparation of test samples and the documentation of test results.