SMU Researcher Develops Mini pH Sensor that Indicates Food Spoilage in Real Time
A graduate student at Southern Methodist University (SMU) has developed a miniature pH sensor that reveals when food has spoiled in real time.
The flexible pH sensor is only 2 millimeters (mm) in length and 10 mm wide, enabling the sensor to be incorporated into current food packaging methods. Traditional pH meters are much larger, at roughly 1 inch (in.) long and 5 in. tall, rendering them unsuitable for inclusion in food packaging.