Keterangan :

DO Meter

DISSOLVED OXYGEN METER
Model : DO-5509

Fungsi: Untuk mengukur tingkat jumlah oksigen ( O2) dan kadar garam yang terdapat dalam air.

Display 13 mm ( 0.5" ) LCD, 3 1/ 2 digits.
Measurement Range Dissolved Oxygen - 0 to 20.0 mg/ L.
Resolution 0.1 mg/ L..
Accuracy ± 0.4 mg/ L. ( after calibration within 23± 5 ) 
Sensor Temp. Automatic from 0 to 40 . 
Compensation
Panel adj. knob ZERO knob, CAL knob.
Battery 006P DC 9V battery ( heavy duty ) .