This International Standard specifies a method to carry out a vertical random vibration test on a complete, filled transport package(s) and unit loads using a random excitation 1). This test may be used to assess the performance of a package in terms of its strength or the protection that it offers to its contents when it is subjected to vertical vibration. It may be performed either as a single test to investigate the effects of vertical vibration or as a part of a sequence of tests designed to measure the ability of a test item to withstand a distribution system that includes a vibration hazard. NOTE In the following text a package or unit load is called a test item. 1) The treatment of random vibration theory can be found in IEC 60068-2-64 (see reference [3 ]in the Bibliography)