Dissolved Oxygen Meter Pen

A Dissolved Oxygen Meter Pen is a handheld device used to measure the concentration of dissolved oxygen in a liquid, typically water. The sensor works by generating a small electric current as oxygen diffuses through a permeable membrane. The pen typically has a digital display that shows the dissolved oxygen concentration in either parts per million (ppm) or milligrams per liter (mg/L). The meter is used by submerging the sensor tip into the water sample and allowing it to stabilize. Dissolved Oxygen Meter Pen is commonly used in environmental monitoring, aquaculture, wastewater treatment, and research to measure oxygen levels in natural bodies of water, fish tanks, and industrial processes.