What is the anti-fouling test and how to measure it?

The anti-fouling gas test generally refers to the paint made of tung oil. Due to improper refining, when the coating film after construction encounters harmful gases (such as S02, CO, NO, etc.) during the drying process, the paint film will produce crystals. Streaks, 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.