How does the manufacturer test the table’s resistance to fading from artificial light sources?

Manufacturers employ rigorous, standardized laboratory tests to evaluate a table's resistance to fading from artificial light sources, a critical factor for furniture longevity in indoor environments. The core methodology involves accelerated weathering testing, which simulates long-term light exposure in a condensed timeframe.

The most prevalent apparatus is the xenon-arc lamp test chamber. This device uses a high-intensity xenon-arc light source, whose spectrum can be filtered to closely mimic the specific wavelengths of indoor artificial lighting, such as those from LEDs or fluorescents. Test samples of the table's finished surfaces are mounted inside the chamber and subjected to continuous, controlled light exposure cycles. Temperature and humidity are precisely regulated to replicate real-world conditions.

Throughout the test, manufacturers measure colorfastness using spectrophotometers or colorimeters. These instruments quantify color changes by comparing the sample's color coordinates (like L*a*b* values) before, during, and after exposure against standardized grayscale or color change scales. The duration and intensity of the test are aligned with international standards, such as ISO 105-B02 or AATCC TM16, which provide benchmarks for acceptable fade levels.

By correlating hours of accelerated testing to equivalent months or years of typical indoor exposure, manufacturers can assign a lightfastness rating. This data-driven process ensures that the tables meet durability claims, helping consumers make informed decisions for spaces with significant artificial light exposure, guaranteeing the finish remains vibrant for years.