The Kesternich test, or the sulphur dioxide (SO2) exposure test is used to evaluate the corrosion resistance of metallic surfaces, surfaces with single-coat film, or a multi-coat system of paints. The products are exposed to humid atmospheres containing corrosive SO2 gas for a period of 8 h at 40 °C. The procedure is generally recommended for testing coatings of thickness not exceeding approximately 40 µm. The test can be used to induce accelerated corrosion in protective coatings for samples such as industrial components, electrical items, electronic parts and components, mechanical constructions, automobile and aircraft parts and components etc. Since the corrosive action of Sulphur dioxide also depends on specific temperature and humidity conditions and the presence of other contaminants, the Test Chamber is designed to create optimal conditions of temperature and humidity and also make provisions for introducing impurities and contaminants. The SO2 Test Chambers are designed in accordance with international standards and is operated using the following standards: ISO 6988, BS EN 60068-2-42:2003 or can be used following a standard specified by a customer if required.