The electrical conductance of a material may vary with
moisture content. Therefore the quality of an electrical
component may degrade due to the diffusion of moisture into
the material from the atmosphere. For this reason an
international standard was devised for materials to be used as
electrical components. Details of testing methods are
presented in the Specification CEI/IEC 749:1996. The test
methods are designed to provide accelerated testing criteria
which correspond to conditions found in normal use of
electrical components.
