tokens: Limits for elevated temperature testing shall be specified case by case . NOTE 1 For example , limits are specified by the requesting project . NOTE 2 For accelerated tests ( i.e. higher temperature testing to take into account long exposures ) there can be a limit , above which , the phenomenon is governed by different mechanisms other than those that really interest the material during its on - orbit phase ; in such a case , a different kind of test , like a dynamic characterization , can be more pertinent .