IEC 60068-2-38:2009 provides a composite test procedure, primarily intended for component type specimens, to determine, in an accelerated manner, the resistance of specimens to the deteriorative effects of high temperature/humidity and cold conditions. The major changes with regard to the previous edition concern the updating of the figures, changes to some of the wording and editorial corrections made for clarification. It has the status of a horizontal standard in accordance with IEC Guide 104.