General Chemical Resistance
This can be classified as short-, medium-, or long-time resistance. Changes in the coating are assessed visually. For standards, see Table 1.1 (“Chemical resistance”). Apparatus: film thickness measuring equipment.
Resistance to Water in Sulfur Dioxide-Containing Atmospheres
For standards, see Table 1.1 (“Corrosion testing; SO2” and“SO2 resistance”). General conditions are standardized for exposing samples to a varying climate where water condenses in the presence ofsulfur dioxide, so that tests in different laboratories give comparable results. The test allows rapid detection of defects in corrosion-inhibiting systems. Furthermore, a method for determining the colorfastness of pigments in binders in the presence of sulfur dioxide is also prescribed. The test is carried out simultaneously on ten identical samples and consists of three cycles. Apparatus: condensation equipment.