METTLER TOLEDO FiveGo F2 Portable pH Meter

Overview

The METTLER TOLEDO FiveGo F2 Portable pH Meter is an engineered electrochemical measurement instrument designed for field-deployable, high-reliability pH, mV, and temperature analysis in demanding non-laboratory environments. Built upon a robust potentiometric measurement principle—where the potential difference between a pH-sensitive glass electrode and a stable reference electrode is converted into a calibrated pH value—the F2 delivers traceable, reproducible results under variable ambient conditions. Its core architecture integrates a low-drift amplifier circuit, precision analog-to-digital conversion, and real-time thermal compensation logic to ensure metrological integrity across its full operational range (0.00–14.00 pH, −1999 to +1999 mV, 0–100 °C). Designed for compliance with fundamental quality system expectations—including ISO/IEC 17025 traceability frameworks and GLP-aligned data handling—the F2 serves as a primary field tool for environmental monitoring, wastewater treatment verification, agricultural soil testing, and industrial process spot-checking where portability and ruggedness are non-negotiable.

Key Features

• IP67-rated enclosure ensures full protection against dust ingress and immersion in water up to 1 meter for 30 minutes—validated per IEC 60529—making it suitable for rain-exposed fieldwork, riverbank sampling, and humid industrial zones.
• Ergonomic handheld form factor with tactile, single-button navigation minimizes operator training time and reduces misoperation risk in gloved-hand scenarios.
• Integrated foldable stand enables stable benchtop orientation for hands-free reading during extended measurements or multi-sample workflows.
• Segmented 3.1-inch LCD provides high-contrast, glare-resistant display performance under direct sunlight or low-light conditions.
• Intelligent endpoint detection offers both automatic stabilization-based termination and manual override, accompanied by dual-mode feedback: audible tone and on-screen icon.
• Four pre-programmed IUPAC/NIST-compatible buffer sets (pH 4.01, 7.00, 9.21, 10.01) support rapid 1–3 point calibration without manual parameter entry.
• Extended battery life (>200 hours on four AAA alkaline cells) eliminates frequent power interruptions during multi-site surveys or remote deployments.

Sample Compatibility & Compliance

The F2 accepts standard BNC pH electrodes, Cinch-type combination probes, and integrated NTC 30 kΩ temperature sensors—ensuring compatibility with METTLER TOLEDO’s InLab® series and third-party electrodes meeting IEC 60746-1 specifications. Its measurement protocol conforms to ASTM D1293 (Standard Test Method for pH of Water) and supports documentation practices aligned with EPA Method 150.1. While not certified for FDA 21 CFR Part 11 electronic signature enforcement, the device supports ALCOA+ data integrity principles via immutable timestamped storage (date/time stamp embedded in each of the 200 records), preventing post-acquisition editing. The ABS housing meets UL 94 HB flammability requirements, and all electrical design complies with IEC 61010-1 safety standards for portable measuring equipment.

Software & Data Management

Data export is performed via manual transcription or optional IR interface (not included) compatible with METTLER TOLEDO’s legacy FiveGo PC software (v2.x). Each stored record contains pH/mV/temperature values, calibration status flag, date/time stamp, and electrode identification (if entered manually). No cloud connectivity or firmware-over-the-air updates are supported—consistent with IEC 62304 Class A medical device software rigor applied to field instrumentation. Audit trails are maintained through sequential record numbering and uneditable metadata fields, facilitating internal QA review and external regulatory inspection readiness.

Applications

• Environmental field screening: surface water, groundwater, stormwater runoff, and sediment pore water pH profiling.
• Wastewater treatment plant operations: influent/effluent monitoring, neutralization tank control, and sludge dewatering optimization.
• Agricultural extension services: soil extract pH determination (1:1 or 1:5 suspensions), irrigation water quality assessment.
• Food & beverage production: rinse water validation, CIP solution verification, and raw material receiving inspection.
• Education and vocational training: undergraduate chemistry labs requiring durable, intuitive instruments for electrochemical fundamentals instruction.

FAQ

Does the F2 support GLP-compliant calibration reporting?
Yes—each calibration event stores buffer IDs, slope (%), offset (mV), and date/time; these parameters are viewable on-device and transferable via IR link for inclusion in lab notebooks.
Can the F2 be used with non-METTLER TOLEDO electrodes?
Yes, provided the electrode features standard BNC or Cinch connectors and incorporates a compatible NTC 30 kΩ temperature sensor for automatic compensation.
Is temperature compensation mandatory during pH measurement?
No—compensation can be disabled for manual correction or fixed-temperature studies; however, automatic mode is recommended for routine aqueous samples per ISO 7888.
What happens when memory reaches 200 entries?
The oldest record is overwritten in FIFO (first-in, first-out) sequence; no warning is issued prior to overwrite.
Is the unit supplied with electrodes or buffers?
No—electrodes, calibration buffers, and carrying cases are sold separately as configurable accessories.