Features: 
Large screen, blue backlight, double digital display, liquid crystal;
Manual and automatic temperature compensation function;
Simultaneous measurement and display of PH, temperature, MV;
Two point calibration

Technical index:  
1．instrument level: 0.01
2． measurement range: 
pH: (-2.00～18.00)pH 
mV: (-1999～0) mV, (0～1999)mV 
temperature : (0～100)℃ 
3．resolution ratio: 
pH: 0.01pH 
mV: 1mV 
temperature : 0.1℃ 
4．intrinsic error: 
pH: ±0.01pH±1
mV: ±1mV±1
temperature : ±0.3℃±1
5． input impedance: 1×1012Ω 
6．stability: ±0.01pH±1/3h 
7．temperature compensation: (0～100)℃ 
8．tested solution temperature : (0～60)℃