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→13.5.4 Corrosion Testing
components used in the information processing technology. Causes for the formation of tarnish film on electrical contacts include for example the presence of corrosive gases such as H<sub>2S</sub>, SO<sub>2</sub>, NO<sub>x</sub>, O<sub>3</sub>, Cl<sub>2</sub>, and NH<sub>3</sub> ''(Table 13.4)'' in industrial environments.
<figtable id="tab:Typical Corrosive Gas Concentrations (ppm) Near Industrial Facilities">'''Table 13.4: Typical Corrosive Gas Concentrations (ppm) Near Industrial Facilities'''
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Corrosion tests – also called environmental – on electrical contacts in natural environments must be critically evaluated, because they are the rather time consuming.
