Polymer products usually damage when exposed to various environmental conditions which are formed from the atmosphere. This directly affects the actual life of the product. Hence, it is necessary to test the quality of the polymers to calculate their real life of the product when placed years outside. This can be done proficiently with the help of a testing instrument known as UV Light Accelerated Weathering Tester. This UV test machine is widely used to create simulated climatic conditions and to study the weather resistant properties of the material inside the laboratory. It has become a very effective method to measure the effect of environmental conditions on the products. Two models of Ultraviolet accelerated weathering testers are available namely,