เครื่องวัดพีเอช รุ่น PH818 แบรนด์ SMART SENSOR 

pH Meter

Specification:

Brand: SMART SENSOR
Model: PH818
Type: portable pH meter
Display mode: LCD
Measurement range: 0.00-14.00ph
Accuracy: ±0.05 PH
Temperature compensation scope: 0℃to 70℃(℃)
Power supply voltage: 4* LR44 1.5v button battery  (not included)
Working temperature: 0 to 50 (℃)
Working humidity:≤80%RH
Weight: Approx. 156g/5.5oz

Package list: 

1*pH meter (battery not included)
1*User's guide