The pH meter project features open software and open hardware design circuit which can be connected with an electrode pH sensor made of glass. The device is termed as pHduino which can operate by ...

Like swimming pools, hot tubs need regular monitoring to ensure their water stays clean and clear. An average person might take a water quality reading once or twice a week using test strips, but such ...

A graduate student at Southern Methodist University (SMU), has developed a miniature pH sensor that can detect when food has spoiled in real-time. The 2-millimeter long and 10-millimeter wide flexible ...