UV Accelerated Weathering Tester test accuracy is affected by many external factors, such as the temperature inside the box, cyclone rate, environmental humidity, etc., so we usually in the test must pay attention to grasp these conditions. Influencing factor one: dust and other surface air pollutants will be more serious, changing the digestive absorption characteristics of the illuminated surface layer of the object block. Unless otherwise required, the experiment should ensure that the test product cleanup, but in the identification of the efficacy of surface air pollutants, the relevant standards should require the test product metal surface treatment and other necessary content. Influencing factor two: short-wave ultraviolet radiation source under the ozone caused by the general can be based on the effect of positive spectrometer kinetic energy all over the radiation source filter out of the environmental test chamber, because the ozone and other environmental pollution vapor wil...