1.1本指南涵盖了易腐产品（如食品和药品）非侵入性外包装使用的商用时间-温度指示器（TTI）的选择信息。当连接到易腐产品的包装上时，TTI用于测量产品的组合时间和温度历史，以预测产品的剩余保质期或发出其可用保质期结束的信号。易腐产品的加工商有责任确定产品在适当温度下的保质期，并与指示剂制造商协商，选择与产品质量最匹配的可用指示剂，作为时间和温度的函数。 注:除时间-温度指示器外，TTI也是时间-温度监测器和时间-温度积分器的缩写。 1.2时间-温度指标可整合到危害分析和关键控制点（HACCP）计划中。对于指示器指示可用保质期结束或产品在正常储存温度下达到保质期的产品，应制定适当的搬运说明。 1.3本标准无意解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This guide covers information on the selection of commercially available time-temperature indicators (TTIs) for noninvasive external package use on perishable products, such as food and pharmaceuticals. When attached to the package of a perishable product, TTIs are used to measure the combined time and temperature history of the product in order to predict the remaining shelf life of the product or to signal the end of its usable shelf life. It is the responsibility of the processor of the perishable product to determine the shelf life of a product at the appropriate temperatures and to consult with the indicator manufacturer to select the available indicator which most closely matches the quality of the product as a function of time and temperature. Note-Besides time-temperature indicator, TTI is also an abbreviation for time-temperature monitor and time-temperature integrator. 1.2 Time-temperature indicators may be integrated into a Hazard Analysis and Critical Control Point (HACCP) plan. Appropriate instructions should be established for handling products for which either the indicator has signaled the end of usable shelf life or the shelf life of the product at its normal storage temperature has been reached. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.