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A weathering tester is a laboratory instrument used to evaluate how materials withstand environmental conditions such as UV radiation, heat, moisture, and temperature changes. It simulates accelerated weathering conditions to assess the long-term durability of materials and coatings. During testing, specimens are exposed to controlled cycles of UV light, condensation, and temperature for a specified period. After exposure, the samples are examined for changes such as fading, cracking, chalking, discoloration, or loss of mechanical properties. Weathering testing helps manufacturers improve product quality and service life. Presto Stantest Pvt Ltd offers reliable weathering testers for controlled and repeatable material durability testing.