Benchtop pH, Conductivity, Dissolved Oxygen, ORP Meter PH-P16 (CAT#: STEM-OEM-0275-ZJF)

The pH Meter is a specialized instrument used to measure the acidity or alkalinity of a solution by detecting the hydrogen ion concentration. It provides vital pH readings for various scientific, industrial, and laboratory processes where precise control of pH levels is essential.

pH Range: -2.00~20.00 pH
pH Accuracy: ±0.01 pH
pH Repeatability: ±0.02 pH
pH Resolution: 0.1 pH, 0.01 pH
pH Stability: ±0.01 pH / 3h
ORP Range: -2000~2000 mV
ORP Accuracy: ±0.1% F.S.
ORP Resolution: 1 mV
Conductivity Range (Standard): 200~2000 μS/cm
Conductivity Range (Optional):
- 0.00~20.00 μS/cm
- 20.0~200.0 μS/cm
- 2.00~20.00 mS/cm
- 20.0~200.0 mS/cm
Resistivity Range: 0~100 MΩ·cm
TDS Range: 0~100 g/L
Salinity Range: 0~100 ppt
Salinity Accuracy: ±1.0% F.S.
Salinity Repeatability: ±1.5% F.S.
Salinity Resolution:
- 0.01 μS/cm
- 0.1 μS/cm
- 1 μS/cm
- 0.01 mS/cm
- 0.1 mS/cm
Electrode Constant:
- Standard: 1 cm⁻¹
- Optional: 0.01 cm⁻¹, 0.1 cm⁻¹, 10 cm⁻¹
Reference Temperature: 25℃, 20℃, 18℃
DO Range: 0~20.00 mg/L (ppm), 0~200.0%
DO Accuracy: ±0.10 mg/L
DO Repeatability: ±0.40 mg/L
DO Resolution: 0.1 mg/L, 0.01 mg/L; 1%, 0.1%
DO Response Time: ≤30 s (25℃, 90% response)
DO Residual Current: ≤0.1 mg/L
DO Salinity Compensation: 0~45 ppt (manual)
DO Pressure Compensation: 0~200 kPa (manual)
DO Automatic Calibration: Air-saturated with water / Water-saturated with air
DO Electrode Type: Polarographic type
Temperature Range: 0~100℃
Temperature Accuracy: ±0.4℃ (5~60℃), ±0.8℃ (others)
Temperature Resolution: 0.1℃
Temperature Compensation: 0~100℃, automatic or manual
Data Storage: 500 sets
Stored Data: Measurement No., Value, Temperature, ATC/MTC status, Date, Time
Communication Interface:
- Standard: USB 2.0, USB micro
- Optional: Bluetooth
Power Supply:
- Standard: AC220V 50/60Hz
- Optional: AC110V 50/60Hz
Ambient Temperature: 5~35℃
Ambient Humidity: ≤75%
IP Rating: IP54 (dust and splash proof)
Dimensions (W×D×H): 215×170×40 mm
Package Size (W×D×H): 475×430×75 mm
Net Weight: 0.6 kg
Gross Weight: 3 kg

Equipped with a 7-inch high-resolution (1024×600) color capacitive touchscreen featuring a modern UI design and intuitive navigation. Shell constructed from durable PEEK material, offering excellent resistance to high temperature, corrosion, and aging.
Built-in ARM 32-bit microprocessor with advanced digital filtering and slip technology ensures fast response and highly accurate measurements. SMT-based PCB design enhances processing reliability.
Main interface simultaneously displays pH, mV, conductivity, dissolved oxygen (DO) concentration, DO saturation, and temperature. Each module is clickable for detailed values and calibration access.
Fully compliant with international G-L-P standards, featuring automatic calibration, auto temperature compensation, data storage, USB output, real-time clock, wireless printing, function settings, and self-diagnostic messages.
Dual-language system (Chinese/English), user-friendly interface, adjustable display brightness, and temperature unit switching between °C and °F. Comes with temperature electrode for automatic temperature compensation.
Built-in large-capacity memory stores up to 500 sets of measurement data. Data can be exported via USB and opened in Excel for convenient review and editing.
Optional Bluetooth module supports wireless Bluetooth printing, providing flexible and user-friendly operation.
Supports intelligent IoT system integration via WeChat Mini Program, enabling real-time mobile access to instrument data.
Advanced polarographic DO electrode measures both temperature and dissolved oxygen. Rapid polarization (3-5 min) and user-friendly diaphragm cap replacement design offer high efficiency and ease of maintenance.
Dissolved oxygen measurement includes automatic compensation for temperature, salinity, and pressure, ensuring highly reliable readings across diverse conditions.

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