(1) Protect the edges of the specimen with a coat of film that can withstand the test conditions (25). Using a
knife, cut two cross lines, reaching the substrate and extending to 10 mm from each edge of the
specimen.
(2) Place the specimen in the salt spray tester that is adjusted to the specified condition, with the test paint
surface facing up. Set the specimen parallel to directions of spray mist flow and at an angle of 15° with
respect to the vertical line so that the spray mist will be evenly applied to the testing surface. After
adjusting the specimen in this way, perform test for the specified time period continuously.
(3) After the test complete, check the crosscut portion on the paint film for rusting and blistering. After 24
hours, attach approximately 18 mm wide cellophane adhesive tape to the crosscut portion, and quickly
peel it upward. Check for separation between paint films.