1. Multi-functional: Built-in pH, conductivity, and dissolved oxygen modules. Detects: pH value, mV value, conductivity, resistivity, TDS, salinity, dissolved oxygen concentration, dissolved oxygen saturation, and temperature.

2. 7-inch large color touchscreen with an easy-to-use graphical interface, automatic screen-off design, shockproof, scratch-resistant, and UV-resistant. Easy to clean and maintain when used with laboratory gloves. Provides rich test parameter information, simple operation, and clear, intuitive results.

3. Compact and elegant independent electrode holder for flexible experimental operation. Built-in Chinese/English operating system, time setting, adjustable brightness, and switchable temperature units.

4. pH supports 0.001pH, 0.01pH, and 0.1pH; mV supports three selectable precisions: 0.01mV, 0.1mV, and 1mV. Built-in 3 sets of 15 buffer solutions, automatic identification, user-defined 1-3 point calibration, and automatic display of electrode slope and status.

5. Automatic salinity and pressure compensation functions; the dissolved oxygen electrode can simultaneously measure temperature and dissolved oxygen, supporting timed and continuous measurements.

6. Built-in international and Chinese conductivity calibration solutions (8 types), supporting arbitrary point calibration methods; switchable between conductivity, TDS, salinity, and resistivity measurements; the 1.0 constant electrode covers the full measurement range; for samples below 20 μS/cm, a 0.1 or 0.01 constant conductivity electrode is recommended.

7. Data statistics function; allows users to statistically analyze, view, delete, save, and print measurement results; GMP compliant; data traceability; supports self-diagnostic information, firmware upgrades, power-off protection, and factory reset; IP54 protection rating.

8. Fully automatic temperature compensation, supporting manual temperature compensation; intelligently judges electrode usage status.

9. USB interface for data export; standard Bluetooth module supports wireless Bluetooth printing; data transfer via PC or mobile app for user convenience.

Display: 7-inch color touchscreen

pH Display Parameters: pH, mV, temperature, time

pH Display Range: -2.00 to 20.00 pH

pH Resolution: 0.1/0.01 pH

pH Accuracy: ±0.01 pH

mV Measurement Range: -2000～2000 mV

mV Resolution: 0.1mV

Calibration: Automatic 3-point calibration

Buffer Solutions: Built-in 3 groups of 15 buffer solutions, automatic identification, supports user-defined 1-3 point calibration

Conductivity Display Parameters: Conductivity, resistivity, TDS, salinity, temperature

Measurement Range: 0.000μS/cm～2000mS/cm

Resistivity: (0 ~ 100) MΩ·cm

TDS: (0 ~ 1000) g/L

Salinity: (0.00～8.00)%

Resolution: 0.001/0.01/0.1/1μS/cm

Accuracy: ±0.5%

Dissolved Oxygen Display Parameters: Concentration, Saturation, Temperature

Dissolved Oxygen Range: (0~50.00) mg/L

Dissolved Oxygen Resolution: 0.1/0.01 mg/L

Dissolved Oxygen Accuracy: ±0.10 mg/L

Response Time: 25s≤(25℃, 90% response)

Temperature Measurement Range: (0～100)℃

Temperature Resolution: 0.1℃

Temperature Accuracy: ±0.1℃

Salinity Compensation: (0～45) ppt

Pressure Compensation Range: (0～200) kPa

Pressure Resolution: 0.1

Pressure Accuracy: ±2%

Stability: (±0.07mg/L)/1h

Temperature Compensation Range: (0 ~ 100℃ (Auto)

Temperature Resolution: 0.1℃

Data Storage: 1800 sets

Communication Interface: USB 2.0, Bluetooth, PC Connection, Mobile APP

Power Supply: 12V 1A

IP Rating: IP54

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