Sandia patents thaw indicator for food

Sandia patents thaw indicator for food

Albuquerque, NM

Sandia National Laboratories has originated and patented a thaw indicator that can determine whether or not frozen food items are fit to eat. According to the company, the inexpensive detector can be packaged with food to monitor its condition during transport. It changes color when a food item`s temperature rises above 32 degrees Fahrenheit, the point above which harmful bacteria multiply, and the color doesn`t change back if the temperature drops below freezing again. Sandia says this invention, which is the byproduct of a solar research project, keeps tabs on frozen food that has been thawed and refrozen. — TGW

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