The ASTM F874-98 (2019) standard describes a standard test method for the measurement of microwave receptor surface temperature. This method is suitable for temperature measurement by means of microwave interactive Encasement and cooking aids such as receptors. It is used to monitor the temperature of the pedestal/food interface during microwave processing of food and can be used for temperature Linear dispersion analysis in volatile and non-volatile extract testing. The standard also provides guidance on how to conduct temperature and time Linear dispersion extraction and migration studies to simulate temperature changes during the actual microwave prepative process of the product.