pHmér

pHmér is a term used to describe a class of compact, portable pH measurement devices designed for rapid, in-situ assessment of hydrogen ion activity in liquids. The devices are intended for use across laboratories, environmental fieldwork, and industrial process monitoring, emphasizing speed, ruggedness, and low power consumption.

Most pHmér units rely on either miniature ion-selective electrodes or optical pH sensing methods integrated on microfabricated chips. They typically feature automatic temperature compensation, digital readout, and interchangeable probe heads. Many models offer wireless data transmission and battery operation for field use.

Operation usually involves calibration with standard buffer solutions, followed by automated measurements that complete in seconds. Modern pHmérs provide data logging, timestamping, and, in some designs, cloud connectivity for remote monitoring. Durability and chemical compatibility vary by probe material and enclosure design.

Development of pHmér concepts has paralleled advances in microfluidics, electrochemistry, and low-power electronics. The term appears in sensor catalogs and academic articles focusing on point-of-need pH analysis. While widely used for quick checks, pHmér devices may require careful calibration and maintenance to ensure accuracy across different reagents and temperatures.