Hanon T860 Fully Automatic Potentiometric Titrator

Overview

The Hanon T860 Fully Automatic Potentiometric Titrator is an integrated, benchtop electrochemical analysis system engineered for precision, reproducibility, and operational flexibility in routine and regulated laboratory environments. It operates on the fundamental principle of potentiometric titration—measuring the potential difference between a working indicator electrode and a stable reference electrode as titrant is incrementally delivered into the analyte solution. The resulting inflection point(s) in the E–V (potential vs. volume) curve identify stoichiometric endpoints with high sensitivity across acid–base, redox, precipitation, and complexometric reaction systems. Designed for compliance-ready workflows, the T860 supports method validation, traceable calibration, and secure data handling in accordance with GLP, ISO/IEC 17025, and FDA 21 CFR Part 11 requirements. Its compact monolithic architecture integrates the titration unit, magnetic stirrer, reagent dispensing module, and sample platform within a single IPX2-rated enclosure—minimizing footprint while maximizing robustness against incidental liquid exposure.

Key Features

• Integrated 7-inch capacitive touchscreen running a modular Android-based OS, enabling intuitive navigation, real-time parameter visualization, and multi-state status indicators (e.g., titration progress, electrode health, reagent level).
• Corrosion-resistant fluidic path constructed from PTFE tubing and a zero-dead-volume rotary valve, ensuring chemical compatibility with aggressive titrants (e.g., HClO₄, KMnO₄, AgNO₃) and minimizing carryover.
• Four selectable burette volumes (5 mL, 10 mL standard, 25 mL) with 1/48,000-step resolution and ≤16 s full refill time—enabling both micro-scale and macro-scale titrations without hardware modification.
• Onboard self-diagnostic suite including automatic pH electrode calibration (up to 3-point), burette volumetric verification, and system integrity checks prior to method execution.
• Configurable endpoint detection algorithms: fixed-endpoint, dynamic (first-derivative), and inflection-point search modes—each adjustable for slope threshold, noise filtering, and minimum volume increment.
• Embedded formula editor supporting multi-variable arithmetic, conditional logic, and unit-aware calculations—allowing derivation of concentration, purity, acid number, peroxide value, or custom assay metrics directly within the instrument firmware.

Sample Compatibility & Compliance

The T860 accommodates diverse sample matrices—including aqueous, non-aqueous (e.g., glacial acetic acid, ethanol), viscous, and suspended-phase solutions—via programmable stirring speed (0–1200 rpm) and temperature-controlled titration (−5 to 120 °C using PT1000 sensor feedback). Reagent management includes sealed bottle caps with activated carbon adsorption layers to prevent CO₂ ingress during NaOH titrations or volatile loss of bromine-based oxidants. All stored methods, raw data, and audit logs are digitally signed and cryptographically timestamped. The four-tier user permission model enforces role-based access control: Administrator, Supervisor, Analyst, and Guest—each configurable for specific functions (e.g., method editing, result approval, report export). Password policies comply with NIST SP 800-63B: mandatory complexity rules, 90-day aging, and forced reset upon expiry. Data exports include PDF reports with embedded digital signatures and Excel files containing full metadata (operator ID, timestamp, instrument serial, calibration history).

Software & Data Management

• Internal 4 GB flash storage retains ≥100,000 complete titration records with hierarchical indexing by date, method name, sample ID, operator, and result status.
• Multi-criteria search engine enables rapid retrieval via Boolean operators, date ranges, numeric thresholds (e.g., “pH > 7.5 AND volume < 8.2 mL”), or free-text tags.
• Reagent library tracks lot-specific parameters: nominal concentration, actual standardized value, calibration date, expiration date (with automated alerting), and stability notes.
• Method library features write-protection locks to prevent accidental overwrites; version history is retained for all modifications.
• Direct output to A4 thermal printers (Wi-Fi or Bluetooth) or legacy dot-matrix devices (RS232/USB-serial) with configurable header/footer templates.

Applications

The T860 delivers validated performance across pharmaceutical QC (USP , ), food & beverage testing (AOAC 947.02, ISO 8536-10), environmental analysis (EPA 300.0, ISO 9963-1), and industrial chemistry (ASTM D974, D664, D4739). Typical use cases include: total acidity in edible oils; chloride content in wastewater; peroxide value in fats; free fatty acids in biodiesel; calcium hardness in drinking water; and assay of active pharmaceutical ingredients (APIs) such as ascorbic acid or sulfamethoxazole. Its non-aqueous titration capability supports Karl Fischer coulometric moisture determination when paired with compatible electrodes and solvents.

FAQ

Does the T860 support GLP-compliant electronic signatures and audit trails?
Yes. All user actions—including method creation, calibration events, result approvals, and data exports—are logged with immutable timestamps, operator credentials, and contextual metadata in accordance with 21 CFR Part 11 Annex 11 requirements.
Can I import existing titration methods from other Hanon instruments?
Yes. Methods saved in .hmt format from Hanon T960/T920 platforms are backward-compatible and retain all endpoint logic, calculation formulas, and sequence parameters.
Is temperature compensation applied automatically during pH measurements?
Yes. The integrated PT1000 sensor continuously feeds temperature data to the meter algorithm, applying Nernst equation correction in real time for accurate pH reporting across the full −5 to 120 °C range.
What validation documentation is provided with the instrument?
Each unit ships with a Factory Calibration Certificate (traceable to NIST SRMs), IQ/OQ protocol templates, and a comprehensive User Requirements Specification (URS) checklist aligned with ISO 15197 and CLSI EP21-A guidelines.
How is data integrity ensured during power interruption?
The system employs non-volatile RAM and journaling file system architecture: any ongoing titration resumes from the last confirmed dispensing step upon reboot, with no loss of intermediate data points or metadata.