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Salt spray exams are carried out in a closed trying out chamber. A salt water answer is implemented to a pattern thru a twig nozzle. This dense saltwater fog is used to imitate a corrosive test. After a period of time, which is dependent on the corrosion resistance of a product, the appearance of oxides is evaluated. The greater resistance the product is, the longer it takes for the oxides to seem. Testing intervals can take between 24 and 1,000 hours or more for the sure coatings.