Control Co.
Traceable Dissolved Oxygen Pen
Control Company’s Traceable Dissolved Oxygen Pen has a tough ABS plastic housing and water-resistant design with o-ring seal and membrane keypad to ensure a long life in severe lab or harsh plant environments. The hold button freezes the reading on the display. The high contrast, easy to read 3/8-inch-high LCD digits simultaneously display oxygen concentration and temperature. The unit recalls minimum/maximum readings at the press of a button.