METTLER TOLEDO FiveGo F3-Standard Portable Conductivity Meter

Overview

The METTLER TOLEDO FiveGo F3-Standard Portable Conductivity Meter is an engineered solution for reliable, on-site or benchtop conductivity measurement in laboratory, field, and quality control environments. Based on two-electrode conductometric principle, the instrument measures the electrical conductance of aqueous solutions—directly proportional to ion concentration—and converts it into standardized conductivity values (μS/cm or mS/cm) with automatic temperature compensation (ATC) using an integrated Pt1000 temperature sensor. Designed for operational simplicity without compromising metrological integrity, the F3-Standard delivers traceable results aligned with routine analytical requirements under ISO/IEC 17025-compliant workflows. Its compact form factor, robust mechanical design, and IP67-rated housing enable consistent performance across variable environmental conditions—including humid laboratories, cleanrooms, and non-controlled field settings—while maintaining full compliance with GLP documentation practices through timestamped data logging.

Key Features

• IP67-certified enclosure ensures dust-tightness and protection against immersion in water up to 1 meter for 30 minutes—ideal for wet-lab benches or mobile sampling operations.
• Ergonomic single-hand operation enabled by intuitive button layout, tactile feedback, and foldable stand for stable upright positioning on flat surfaces.
• High-contrast 3.1-inch segmented monochrome LCD display with optimized character height and viewing angle for legibility under varied lighting conditions.
• Integrated Pt1000 temperature sensor enables automatic temperature compensation (ATC) across 0 °C to 100 °C, supporting both linear and non-linear (e.g., NaCl-based) compensation algorithms.
• Single-channel measurement architecture with LE703 conductivity sensor—designed for durability, rapid stabilization, and low-maintenance calibration cycles.
• Onboard storage for 200 timestamped measurements with date/time stamping; data export via optional PC connection (cable not included).
• No ISM (Intelligent Sensor Management) support—suitable for users prioritizing cost-effective, fixed-sensor deployments over predictive diagnostics or sensor lifecycle tracking.

Sample Compatibility & Compliance

The FiveGo F3-Standard is validated for use with deionized water, buffer solutions, process streams, cooling tower water, boiler feedwater, and general-purpose aqueous electrolytes. It is not intended for non-aqueous solvents, highly viscous media, or suspensions containing particulates >50 µm. The device meets IEC 60529 (IP67), EN 61010-1 (electrical safety), and RoHS directives. While not certified for hazardous locations, its ingress protection allows deployment in Class II, Division 2 environments per NEC guidelines when used with appropriate accessories. Calibration verification follows ASTM D1125 and ISO 7888 standards using certified KCl reference solutions (e.g., 0.01 mol/kg, 0.1 mol/kg). Documentation supports audit readiness for FDA 21 CFR Part 11–aligned systems when paired with validated data transfer protocols.

Software & Data Management

Data management is performed via manual review on-device or exported in CSV format using METTLER TOLEDO’s free LabX Lite software (compatible with Windows 10/11). The instrument stores 200 measurements with embedded metadata: conductivity value, temperature reading, measurement timestamp, and unit selection. No onboard trend analysis or statistical functions are provided—intentionally simplifying the interface for routine pass/fail checks or QC release testing. Audit trail capabilities are limited to local storage; full electronic record integrity requires external integration with LIMS or ELN platforms supporting ALCOA+ principles. Firmware updates are delivered via USB connection and require authorized service tools.

Applications

• Quality assurance of purified water (PW) and water-for-injection (WFI) in pharmaceutical manufacturing per USP .
• Routine monitoring of conductivity in HVAC cooling systems and industrial boiler feedwater to prevent scaling and corrosion.
• Educational laboratories requiring rugged, entry-level instrumentation for electrochemistry fundamentals instruction.
• Environmental field testing of surface water, groundwater, and wastewater effluents where portability and environmental resilience are critical.
• In-process verification during chemical synthesis or bioprocessing steps where ionic strength must remain within defined operational windows.

FAQ

Does the F3-Standard support multi-parameter measurement?
No—the F3-Standard is a dedicated single-parameter conductivity meter. It does not measure pH, ORP, dissolved oxygen, or TDS natively.
Can the LE703 sensor be calibrated in the field without a calibration kit?
Yes—single-point calibration using a certified KCl standard is supported; no proprietary calibration fluid is required.
Is the device compliant with FDA 21 CFR Part 11?
The instrument itself is not Part 11–compliant out-of-the-box; electronic signature and audit trail functionality require integration with validated third-party software and procedural controls.
What is the expected lifetime of the LE703 sensor under normal lab use?
Typical service life exceeds 24 months with proper storage, regular cleaning, and avoidance of drying out the electrode surface.
Does the F3-Standard include a carry case?
Yes—a custom-fitted portable carrying case is supplied as standard equipment with part number 30254117.