VIKING-PH125 — Laboratory pH/mV Meter · 5.0″ Touchscreen · 0.01 pH
The VIKING-PH125 Laboratory pH meter is a reliable benchtop instrument designed for routine pH and mV measurements. With its 5.0″ color touchscreen, ±0.01 pH accuracy and GLP data storage for 500 results, this VIKING-PH125 Laboratory pH meter is ideal for water quality, food & beverage and educational laboratories.
OVERVIEW
Benchtop pH/mV meters are essential instruments for routine pH and ORP measurements in water quality, food & beverage, pharmaceutical, and educational laboratories. The choice of display, accuracy, and calibration options directly affects measurement reliability and ease of use in daily laboratory workflows.
VIKING-PH125 is a reliable, cost-effective benchtop pH/mV meter designed for everyday laboratory use. Its 5.0″ color touchscreen ensures intuitive operation, while ±0.01 pH accuracy, 1–5 point calibration with automatic buffer recognition (USA/NIST groups), and ATC/MTC temperature compensation deliver consistent and precise results across research, QC and general lab environments.
VIKING-PH125 Laboratory pH meter featuring a 5.0″ color touchscreen for clear measurement display. This benchtop pH meter combines ±0.01 pH accuracy, 1–5 point calibration with multiple buffer groups (USA/NIST), GLP data storage for 500 results and simple touch operation for routine laboratory work.COLO.Science · Practical and robust equipment for everyday laboratory workflows.
Product Overview
The VIKING-PH125 Laboratory pH meter is built for laboratories that need a reliable pH/mV meter with straightforward operation. The 5.0″ color touchscreen ensures easy reading, and the multi-point calibration (up to 5 points) with automatic buffer recognition supports typical pH measurement tasks.
Configuration notice — delivery depends on selected options
pH/mV meters may be delivered in different configurations depending on the application and selected accessories. The official PDF technical specification defines the exact configuration, included components and available options for each model/variant. Content shown on this website is provided for general informational purposes only and may not represent the final delivered configuration. Specifications may change without notice.
Key Features
5.0″ Color Touchscreen
±0.01 pH Accuracy
0.01 pH Resolution
1–5 Point Calibration
USA/NIST Buffer Groups
ATC / MTC
GLP Data (500 results)
RS-232 Interface
Electrode Diagnostics
Power-off Protection
Measurement
Reliable pH & mV Measurement with the VIKING-PH125 Laboratory pH Meter
Intuitive Touch Operation
The 5.0″ color touchscreen provides clear display and easy menu navigation for routine tasks without complex configuration.
Multi-Point Calibration
1–5 point automatic calibration with USA/NIST buffer recognition. Slope preview and graphical calibration curve for quality assurance.
Flexible Reading Modes
Selectable pH, mV and Rel.mV modes with stabilization icon and synchronous display of pH, temperature and buffer values.
pH Measurement
- Range: -2.00 to 20.00 pH
- Resolution: 0.01 pH
- Accuracy: ±0.01 pH
- Calibration: 1–5 points with USA/NIST buffers
- Automatic buffer recognition
- Slope preview and graphical calibration curve
mV / ORP Measurement
- Range: -1999.9 to 1999.9 mV
- Resolution: 0.1 mV
- Accuracy: ±1 mV
- mV and Rel.mV modes selectable
- Suitable for ORP and redox measurements
Temperature & Data Management
- Temperature range: -30.0 to 105.0 °C
- Resolution: 0.1 °C, Accuracy: ±0.2 °C
- ATC / MTC compensation
- Data storage: 500 results (GLP-compliant)
- Power-off protection prevents data loss
- RS-232 interface for printer or PC connection
Technical Specifications (VIKING-PH125)
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Model | VIKING-PH125 Laboratory pH meter | Grade | 0.01 pH |
| Display | 5.0″ color touchscreen | Measurement modes | pH, mV, Rel.mV |
| pH range | -2.00 to 20.00 pH | pH resolution | 0.01 pH |
| pH accuracy | ±0.01 pH | Calibration points | 1–5 points |
| Buffer groups | USA/NIST, 5 groups / 25 buffers | mV range | -1999.9 to 1999.9 mV |
| mV resolution | 0.1 mV | mV accuracy | ±1 mV |
| Temperature range | -30.0 to 105.0 °C | Temp. resolution | 0.1 °C |
| Temp. accuracy | ±0.2 °C | Temperature compensation | ATC, MTC |
| Data storage | 500 sets (GLP-compliant) | Power-off protection | Yes |
| Interface | RS-232 | pH input | BNC, impedance >3×10¹² Ω |
| Temp. probe input | Cinch, NTC 30 kΩ | Power | External adapter 9–12 V DC |
Note: If the VIKING-PH125 Laboratory pH meter does not match your application needs, COLO.Science can propose an appropriate technical solution. Specifications may change over time.
VIKING Series — Model Comparison
Compare COLO benchtop pH meters by display, accuracy, calibration points, data storage and key features. The VIKING-PH125 Laboratory pH meter offers an excellent balance of performance and value for routine laboratory use.
| Parameter | VIKING-PH200 | VIKING-PH300 | VIKING-PH125 | VIKING-PH150 |
|---|---|---|---|---|
| Display | 6.0″ LCD | 5.7″ LCD | 5.0″ color touchscreen | 5.0″ color touchscreen |
| pH accuracy | ±0.01 pH | ±0.01 pH | ±0.01 pH | ±0.002 pH |
| pH resolution | 0.01 pH | 0.01 pH | 0.01 pH | 0.001 pH |
| Calibration points | 1–3 | 1–5 | 1–5 | 1–9 |
| Buffer groups | NIST | NIST, DIN, GB, USA | USA/NIST, 5 groups | 9 groups / 44 buffers |
| Data storage | 50 results | 500 results | 500 results | 2000 results |
| Interfaces | — | USB, RS-232 | RS-232 | USB, RS-232 |
COLO.SCIENCE KNOWLEDGE
pH and mV in routine laboratory water testing
Explore COLO.Science articles on pH theory, USA/NIST buffers, electrode care and good laboratory practice for drinking water, process water and effluent analysis, illustrated with real-world COLO.Science water quality applications.
TYPICAL APPLICATIONS
- Water and wastewater laboratories (drinking water, process water, effluent control).
- Food & beverage quality control, dairy applications and agriculture.
- Pharmaceutical and biotechnology laboratories (buffers and in-process control).
- Educational and research laboratories teaching electrochemistry.
- General laboratory pH/mV measurements requiring robust, GLP-ready documentation.
DOWNLOADS & SUPPORT
VIKING-PH125 — Laboratory pH/mV Meter · 5.0″ Touchscreen
The VIKING-PH125 Laboratory pH meter is ideal when you need a reliable benchtop pH/mV meter with intuitive touchscreen, ±0.01 pH accuracy, 1–5 point calibration and GLP data management — supported by COLO.Science.
COLO.Science · Practical and robust equipment for everyday laboratory workflows.
