Hanna Instruments HI98150 Portable pH/ORP/Temperature Meter

Overview

The Hanna Instruments HI98150 is a rugged, handheld pH/ORP/temperature meter engineered for field-deployable precision and laboratory-grade reliability in demanding industrial, environmental, and quality control settings. Built upon a dual-sensor electrochemical measurement architecture, it simultaneously acquires pH (hydrogen ion activity), redox potential (electrode potential relative to standard hydrogen electrode), and temperature—enabling full automatic temperature compensation (ATC) and thermally referenced electrochemical quantification. Its microprocessor-controlled analog front-end ensures stable signal conditioning, low-noise amplification, and high common-mode rejection—critical for accurate potentiometric measurements in electrically noisy or variable-impedance sample matrices. Designed for compliance with GLP (Good Laboratory Practice) frameworks, the HI98150 embeds audit-ready data integrity features including timestamped calibration logs, electrode diagnostics, and user-defined calibration reminders—making it suitable for regulated environments where traceability and procedural consistency are mandatory.

Key Features

• Triple-parameter measurement: simultaneous pH, ORP, and temperature acquisition with real-time ATC
• High-resolution display: backlit LCD with dedicated fields for measured values, calibration status, electrode health indicator, and battery level
• Advanced calibration management: up to 5-point pH calibration using built-in NIST/USA traceable standards (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) plus 5 user-definable points; ORP calibration supports 2-point (0 mV / 350 mV) or 3-point (0 / 350 / 1900 mV) modes
• Electrode diagnostics: real-time impedance monitoring and performance alerting to guide cleaning, reconditioning, or replacement of the HI1618D combination electrode
• Data integrity tools: auto-hold function for stable reading capture, 500-point internal memory with time/date stamping, and USB interface (compatible with HI92000 software) for secure export and CSV-compatible reporting
• Robust portability: IP67-rated housing (dust-tight and submersible to 1 m for 30 min), ergonomic slim-profile chassis (185 × 72 × 36 mm), and 3×AAA alkaline battery operation (>200 hours continuous use)

Sample Compatibility & Compliance

The HI98150 is validated for aqueous and semi-aqueous samples across diverse matrices—including wastewater, process streams, food extracts, pharmaceutical buffers, and soil leachates—provided conductivity exceeds 10 µS/cm and viscosity remains within non-clogging limits for the HI1618D electrode’s open-junction reference system. It meets ISO/IEC 17025 alignment requirements for routine calibration verification and supports documentation workflows compliant with FDA 21 CFR Part 11 (when used with HI92000 software and appropriate access controls). All pH calibrations utilize NIST-traceable reference materials certified per ASTM E2064 and ISO 3696 Grade 3 water specifications. Temperature compensation adheres to the DIN 19265 and EN ISO 10523 protocols for pH measurement uncertainty estimation.

Software & Data Management

HI92000 Windows-based data management software enables full bidirectional communication via USB. Users can configure instrument settings remotely, schedule automated calibration alerts, generate GLP-compliant reports with electronic signatures, and perform statistical analysis (mean, SD, %RSD, trend charts) on stored datasets. Audit trails record all parameter changes, calibration events, and data exports—including operator ID, timestamp, and action type—ensuring full traceability under GMP/GLP audits. Data exports comply with LIMS integration standards (e.g., ASTM E1469, ANSI/AAMI CI82) and support direct import into Excel, LabArchives, or ELN platforms.

Applications

• Environmental monitoring: pH and ORP profiling of surface water, groundwater, and effluent streams per EPA Method 150.1 and ISO 10523
• Food & beverage QC: acidity verification in dairy, juice, and fermented products; redox stability assessment during shelf-life studies
• Pharmaceutical manufacturing: buffer preparation validation, cleaning-in-place (CIP) rinse monitoring, and excipient compatibility testing
• Academic research: electrochemical kinetics experiments, corrosion potential mapping, and teaching labs requiring robust student instrumentation
• Industrial process control: boiler feedwater alkalinity, electroplating bath monitoring, and bioreactor pH/oxidation state feedback loops

FAQ

What electrode is required for the HI98150?

The HI98150 is designed for use with the HI1618D pH/ORP/temperature combination electrode, featuring a double-junction Ag/AgCl reference system, open-tip liquid junction, and integrated Pt1000 temperature sensor.
Does the HI98150 support GLP data logging?

Yes—it records calibration dates, buffer IDs, slope/mV offset values, electrode impedance, and operator notes with timestamps, meeting core GLP documentation requirements for instrument qualification.
Can ORP be measured relative to different reference electrodes?

The instrument reports mV vs. Standard Hydrogen Electrode (SHE); users may apply manual conversion factors for Ag/AgCl (e.g., +197 mV) or SCE (+241 mV) in post-processing.
Is temperature compensation automatic across the full range?

Yes—ATC operates from –20.0 to 120.0°C using the built-in Pt1000 sensor; manual TC is also available if external probe input is preferred.
How is data security ensured during USB transfer?

HI92000 enforces role-based access control, encrypted local storage, and immutable audit logs—fully supporting 21 CFR Part 11 Subpart B requirements for electronic records and signatures.