Thermal performance testing can be used to determine the effectiveness of temperature controlled packaging and to measure the relative ability of a specific thermal package design to maintain internal temperatures within a desired range when exposed to test cycles that simulate ambient exposure. These thermal-testing procedures should be considered as a general starting point for thermal analysis due to the many variables that can affect the thermal and distribution performance of a package. These procedures are not intended to evaluate the protection afforded packaged-products, nor the shipping containers from other conditions such as shock, vibration, moisture, corrosion, contaminating odors, etc.; packaged-products are considered separately for these conditions. This testing should be conducted in accordance with a documented protocol by an ISTA certified laboratory, or a laboratory that has established procedures and calibrated equipment adequate to demonstrate reproducibility of methods of thermal analysis.