Bút đo độ dẫn điện của nước PCD-432
Model : PCD-432 
* 2 ranges : 2,000 uS, 20 mS. 
* Temperature measurement, oC/oF. 
* Automatic temperature compensation. 
* Separate probe, easy for remorting operation. 
* Carbon rode electrode, high reliability. 
* Data hold, Record ( max., min. ). 
* External calibration buttons. 
* DC 1.5V battery ( UM-4, AAA ) x 4. 
DISSOLVED OXYGEN METER, all in 1