JLab PORTABLE DIGITAL DISSOLVED OXYGEN METER

* Range D.O. Temp. 0 to 20.0ppm 0 to 50°C * Resolution D.O. Temp 0.1ppm 0.1°C * Accuracy D.O. 0.1ppm ± 1 count * Temp Compensation 0°C to 50°C Manual * Accuracy of Compensation D.O. ±3% * D.O. Sensor Amperometric Gold/Silver Membrane type * Display 3 ½ digit seven segment LCD display * Power 1 x 9V Batterh