The anti-pollution test generally refers to the paint made of tung oil. Due to improper refining and application, when the paint film encounters harmful gases (such as S02, CO, NO, etc.) during the drying process, the paint film will produce crystal lines , Cracks and reflections. The test method is to put the wet sample into a glass cover, and use a lit kerosene lamp to generate dirty gas in the cover. After a certain period of time, check whether there is any abnormality in the paint film.
