The intent of this test procedure is to measure the tensile strength of optical fiber at a specified constant rate of loading and environment is designed for determining fiber strength. Since this method is 100% destructive, it shall not be a substitute for any proof testing which may be done additionally. This method is to be applied only to optical fibers. It shall not be used for cables or bundles of fiber. This test may be applied to fibers as manufactured or to fibers that are exposed to alternative environments.