Hanna HI2210 Benchtop pH and Temperature Meter

Overview

The Hanna HI2210 is a benchtop pH and temperature meter engineered for precision, repeatability, and operational simplicity in routine laboratory and quality control environments. It operates on the fundamental principle of potentiometric measurement: detecting the potential difference between a pH-sensitive glass electrode and a stable reference electrode immersed in an aqueous sample. This voltage—generated in accordance with the Nernst equation—is converted into a pH reading with high linearity across an extended range of -2.00 to 16.00 pH. Integrated with a high-impedance input circuit (≥10¹² Ω), the instrument ensures minimal current draw from the electrode, preserving signal integrity and mitigating drift during low-conductivity or high-resistance measurements. The dual-parameter design simultaneously captures temperature data via a Pt1000 or thermistor probe, enabling real-time temperature compensation—a critical requirement for accurate pH interpretation per ISO 7027, ASTM D1293, and USP . Its compact yet robust architecture supports GLP-compliant workflows without requiring external software or complex configuration.

Key Features

• High-resolution display with intuitive on-screen prompts guiding users step-by-step through calibration and measurement procedures
• Auto-recognition of standard buffer solutions (pH 4.01, 6.86, 7.01, 9.18, 10.01) compliant with NIST and USA traceability requirements
• Programmable calibration expiry alert to support audit-ready documentation and scheduled maintenance protocols
• Configurable temperature compensation mode: automatic (using integrated sensor) or manual entry for fixed-point reference conditions
• Self-diagnostic routines verifying electrode response slope, offset, and impedance prior to measurement initiation
• Auto-endpoint detection with user-adjustable stability criteria (e.g., ΔpH < 0.002 over 3 seconds)
• GLP data logging capability storing date/time-stamped calibration records, including buffer IDs, slope (%), offset (mV), and temperature

Sample Compatibility & Compliance

The HI2210 is validated for use with standard BNC-compatible combination pH electrodes—including double-junction, gel-filled, and refillable liquid-electrolyte types—enabling reliable performance across diverse matrices: aqueous buffers, food extracts, wastewater effluents, pharmaceutical formulations, and environmental soil leachates. Its extended pH range (-2.00 to 16.00) accommodates highly acidic or alkaline samples common in chemical synthesis and electroplating process monitoring. All calibrations adhere to NIST-traceable reference materials, satisfying metrological traceability requirements under ISO/IEC 17025. The instrument’s firmware implements data integrity safeguards consistent with FDA 21 CFR Part 11 principles, including non-erasable calibration logs and user-accessible audit trails. It meets CE marking requirements for electromagnetic compatibility (EN 61326-1) and safety (EN 61010-1), and supports laboratory accreditation under ISO 17025 and GMP-aligned QC processes.

Software & Data Management

While the HI2210 operates as a standalone instrument, its internal memory retains up to 200 measurement records and full calibration histories—including slope, asymmetry potential, and temperature at time of calibration. Each entry is timestamped and tagged with operator ID (if enabled via password-protected user accounts). Data export is supported via optional RS232 interface (HI92000 software compatible), allowing structured CSV output for integration into LIMS or Excel-based trend analysis. All stored data comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) when exported and archived according to institutional SOPs. No cloud connectivity or proprietary cloud platform is required—ensuring data sovereignty and alignment with IT security policies in regulated facilities.

Applications

• Environmental testing labs performing surface water, groundwater, and wastewater pH verification per EPA Method 150.1 and ISO 10523
• Food & beverage QA/QC departments monitoring acidity in dairy products, juices, fermented beverages, and canned goods
• Pharmaceutical manufacturing units conducting pH verification of injectables, buffers, and cleaning validation solutions per USP
• Educational laboratories teaching fundamental electrochemistry concepts and electrode behavior under variable ionic strength conditions
• Industrial process control for boiler feedwater, cooling tower chemistry, and plating bath management

FAQ

What calibration standards are supported by the HI2210?
The meter includes five built-in NIST-traceable calibration points: pH 4.01, 6.86, 7.01, 9.18, and 10.01. It automatically detects and validates these buffers during calibration.
Does the HI2210 support automatic temperature compensation (ATC)?
Yes—it accepts input from external ATC probes (e.g., HI7662-M) or allows manual temperature entry. Compensation follows the standard pH/temperature relationship defined in IUPAC recommendations.
How does the instrument handle electrode diagnostics?
Prior to measurement, it evaluates electrode slope (% of theoretical Nernstian response) and mV offset at zero potential; values outside configurable thresholds trigger warning indicators.
Is GLP data reporting available without external software?
Yes—calibration logs with timestamps, buffer IDs, slope, offset, and temperature are retained internally and viewable directly on the instrument display.
Can the HI2210 be used with non-Hanna electrodes?
Any BNC-interface pH electrode meeting ≥10¹² Ω input impedance requirements is compatible, though optimal performance and diagnostic accuracy are validated with Hanna-certified sensors.