测试程序7D是一种开发测试，用于评估单个包装产品外部温度暴露的影响。它可用于开发由任何材料制成的温控运输包装。它可用于标准或绝缘运输包装在正常情况下的单独或比较性能分析。其设计用于测量包装在暴露于温度条件下的测试循环时保护产品的相对能力。产品和包装一起考虑，而不是分开考虑。其目的不是评估包装产品在冲击、振动和/或压缩下的防护效果。警告:7D中的循环曲线是一般模拟，不代表最坏情况下的温度暴露。本程序中列出的概况并非基于当前基于数据的研究。许多变量会影响包装的热性能和分布性能，以及在每种分布情况下分布环境中发现的环境暴露轮廓极限，因此: 如果测试是为了符合补充或取代本程序的特定政府、行业、实验室、验证或监管标准或指南，则用户有责任了解和理解这些要求，并根据ISTA强烈鼓励使用ISTA 7E而不是程序7D。ISTA 7E是在对包裹递送系统中发现的温度范围进行全面调查后开发的，被认为是对热环境的最佳和最新模拟。包裹递送系统中隔热集装箱的热测试应考虑ISTA 7E。

Test Procedure 7D is a development test to evaluate the effects of external temperature exposures of individual packaged-products.It can be used for the development of temperature controlled transport packages made of any material.It can be used for individual or comparative performance analysis of standard or insulated transport packages against normally encountered conditions.It is designed to measure the relative ability of a package to protect a product when exposed to test cycles of temperature conditions.The product and package are considered together and not separately.It is not intended to evaluate the protection afforded packaged-products from shock, vibration and/or compression.CAUTION: The cycle profiles in 7D are general simulations not intended to represent a worst case temperature exposure. The profiles listed in this procedure are not based on current data-based research. Many variables affect the thermal and distribution performance of a package and the ambient exposure profile extremes found in the distribution environment for each distribution situation, therefore:If testing is for compliance with specific government, industry, laboratory, validation or regulatory standards or guidelines that would supplement or supersede this procedure, it is the responsibility of the user to know and understand those requirements and use the proper procedure accordinglyISTA strongly encourages the use of ISTA 7E over Procedure 7D. ISTA 7E was developed after a comprehensive survey of temperature ranges found in the parcel delivery system and is considered to be the best and most current simulation of the thermal environment.ISTA 7E should be considered for thermal testing of insulated shipping containers in the parcel delivery system.