OXYGEN METER 
Model : DO-5510HA 
* -P circuit, LCD with display unit. 
* Dissolved oxygen range : 0 to 20 mg/L. 
* Max., Min., Memory recall button. 
* DO, Oxygen in air, Temp., ATC, Auto Cal., % salt. 
* Diaphragms & electrolyte included. 
* Probe head with diaphragm set and electrolyte are included. 
* Size : 180 x 72 x 32 mm.