CVMS °Climatic produces 4 standard sizes of UV light test cabinets. They have been designed to imitate the ageing effects of sunlight, rainwater and dew; using UVA and UVB light tubes to simulate the radiation of sunlight and condensed water and spray to imitate dew and rainfall. These tests can uncover in days or a few weeks the effect of outside exposure (such as fading, colour change, fracturing, brittleness etc…) that can take several months or years. The results and subsequent investigations and further tests can improve material durability and help to select the correct materials or material combinations for the application.