Instruments as per ASTM G-154

Standard procedure for operating a Fluorescent ultraviolet lamp for testing the exposure of nonmetallic materials.

This standard consists of a set of instruction that prescribe how to operate a testing instrument with fluorescent UV lamp to assess the effects of the exposure of non-metallic materials to environmental conditions such as heat, moisture, sunlight etc. This standard helps in studying the deterioration of properties of a material due to localized weathering conditions.