Distribution Testing is the practice to provide a uniform basis for evaluating, in a laboratory, the ability of shipping units to withstand the distribution environment. This is accomplished by subjecting them to a variety of tests such as impact, compression, vibration and altitude testing. This is essentially a process of bringing the hazards of the distribution environment into the laboratory. These tests replicate real life experiences that are encountered in various distribution cycles. The optimum protective package consists of a product of known ruggedness and a package which together provide sufficient resistance to damage during distribution without over packing.