Qiwei PHS-2CB(Desktop precision type rechargeable) The PH meter is used to sample and determine the pH value of the aqueous solution and measure the electrode potential (mV value), which is suitable for industrial and mining enterprises, scientific research, agriculture, teaching, environmental protection and other units. High-precision measuring instrument in the laboratory, dual function, standard E201-C composite electrode with a measurement accuracy of ±0.02 pH, optional diamond-shaped holder.
1. Positioning knob: adjust the value of pH6.86 standard buffer according to the corresponding temperature during calibration.
2. Temperature knob: set the temperature value of the solution to be measured.
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 composite electrode (interface model: Q9)
5. pH/mV transfer 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 stabilized power adapter or power cord
(1) Ambient temperature: 5~40°C;
(2) Relative Humidity: ≤80%;
(3) Temperature of the measured solution: 5~60°C;
(4) Power supply: 220V/50Hz power supply
(5) There is no significant vibration and strong electromagnetic field interference.

