Qiwei PHS-2C (desktop precision type) PH meter is used for sampling and measuring the pH value of aqueous solution and measuring the electrode potential (mV value). It is suitable for industrial and mining enterprises, scientific research, agriculture, medicine, teaching, environmental protection and other units. High-precision measuring instrument in the laboratory, dual function, standard E201-C composite electrode, measurement accuracy of ±0.02pH, optional rhombus bracket.
1. Positioning knob: adjust the value of the pH6.86 standard buffer solution according to the corresponding temperature during calibration.
2. Temperature knob: set the temperature value of the solution to be tested.
3. Slope knob: adjust the value of pH4.00 or pH9.18 standard buffer according to the corresponding temperature during calibration.
4. Electrode socket: connect pH compound electrode (interface model: Q9)
5. pH/mV conversion switch: choose to measure pH value or mV value
6. Power switch: turn on or off the power of the instrument
7. Power socket: connect the regulated power adapter or power cord
(1) Ambient temperature: 5-40°C;
(2) Relative Humidity: ≤80%;
(3) Measured solution temperature: 5-60°C;
(4) Power supply: 220V/50Hz power supply
(5) No significant vibration and strong electromagnetic field interference.

