Lutron DO-5509 Pocket Dissolved Oxygen Meter

\nDISSOLVED OXYGEN METER\nModel : DO-5509\n* Range : 0 to 20 mg/L.\n* ATC. Resolution : 0.1 mg/L.\n* Pocket size, 13 mm LCD.\n* Size : 131 x 70 x 25 mm.\n\n