HOGON MT-V6 Automatic Redox Potentiometric Titrator

Overview

The HOGON MT-V6 Automatic Redox Potentiometric Titrator is a fully integrated electrochemical titration system engineered for high-reproducibility redox (oxidation-reduction) endpoint detection in aqueous and non-aqueous media. It operates on the fundamental principle of potentiometric titration—measuring the potential difference between a reference electrode and an indicator electrode (e.g., platinum or redox-specific electrodes) as titrant is incrementally added. The instrument continuously monitors the electromotive force (EMF) of the cell and identifies inflection points in the E–V curve (potential vs. volume), enabling precise stoichiometric determination of analytes such as Fe²⁺/Fe³⁺, I⁻/I₂, Ce⁴⁺, ascorbic acid, peroxides, and other redox-active species. Designed for routine QC/QA laboratories and research environments, the MT-V6 delivers traceable, GLP-compliant results without manual intervention—reducing operator bias and enhancing inter-laboratory comparability.

Key Features

• Fully automated workflow: Integrated sample dispensing, reagent delivery, magnetic stirring, endpoint detection, and real-time data logging—all synchronized via embedded control firmware.
• High-fidelity potentiometric measurement: Dual-channel analog-to-digital conversion with 0.1 mV resolution and ±0.1 mV accuracy ensures reliable detection of subtle potential shifts during redox transitions.
• Modular burette configuration: Standard 20 mL glass burette with 1 µL dispensing resolution; optional 10 mL burette (0.5 µL resolution) for micro-volume applications requiring enhanced precision.
• Multi-algorithm endpoint recognition: Supports derivative-based methods—including first-derivative (dE/dV) peak detection, second-derivative (d²E/dV²) zero-crossing, and fixed-potential or fixed-volume equivalence point modes—configurable per method.
• Intuitive 7-inch capacitive touchscreen interface: Runs localized multilingual OS (English, Chinese, Spanish, German); supports method template creation, parameter locking, and live titration curve visualization.
• Robust mechanical architecture: Corrosion-resistant housing, chemically inert fluid path components (PTFE, borosilicate glass, EPDM seals), and thermally stabilized electrode port design ensure long-term operational stability under continuous duty cycles.

Sample Compatibility & Compliance

The MT-V6 accommodates liquid samples across diverse matrices—including acidic, alkaline, buffered, and organic solvent-based systems—provided appropriate electrode selection (e.g., Pt vs. Ag/AgCl vs. composite redox electrodes) and compatibility validation are performed. It meets essential requirements for ISO/IEC 17025-accredited testing laboratories when operated under documented SOPs. While not pre-certified to FDA 21 CFR Part 11, its audit trail functionality—including timestamped method parameters, raw EMF data logs, user login records, and electronic signature support—enables compliance-ready implementation in GMP/GLP-regulated environments. All hardware and firmware comply with IEC 61010-1 safety standards for laboratory electrical equipment.

Software & Data Management

The proprietary HOGON TitraSoft™ software (v3.2+) provides comprehensive method development, calibration management, and report generation capabilities. Raw potential–volume datasets are stored in vendor-neutral CSV and XML formats. USB mass storage and Ethernet (TCP/IP) interfaces allow secure export to LIMS or ELN platforms. Audit trail logs record all critical events—including method edits, titrant lot changes, electrode recalibrations, and manual overrides—with immutable timestamps. Data integrity safeguards include password-protected user roles (Operator, Supervisor, Administrator), encrypted local database storage, and configurable auto-backup intervals.

Applications

• Chemical manufacturing: Quantification of reducing agents (e.g., sodium sulfite, hydrazine) and oxidants (e.g., KMnO₄, K₂Cr₂O₇) in process streams and raw material specifications.
• Pharmaceutical analysis: Redox titrimetric assay of active pharmaceutical ingredients (APIs) containing thiol, quinone, or catechol moieties; monitoring of residual peroxide in sterilized excipients.
• Environmental testing: Determination of chemical oxygen demand (COD) via dichromate titration; iodometric quantification of dissolved oxygen (DO) and chlorine residuals in wastewater.
• Food & beverage quality control: Vitamin C (ascorbic acid) content verification in fortified juices and supplements; sulfur dioxide (SO₂) analysis in wines using iodine titration.
• Academic instruction: Hands-on pedagogy in analytical chemistry courses covering Nernst equation derivation, titration curve simulation, and comparative evaluation of endpoint detection algorithms.

FAQ

What electrode types are compatible with the MT-V6 for redox titrations?
Platinum indicator electrodes (solid or wire), reversible redox electrodes (e.g., Pt–Au composite), and combination reference electrodes (Ag/AgCl/KCl 3 mol/L) are supported. Electrode compatibility must be verified against solvent and pH range per ASTM D129–22 guidelines.
Can the MT-V6 perform non-redox titrations?
Yes—it supports acid-base, complexometric (e.g., EDTA), and precipitation titrations by swapping electrodes (e.g., pH glass, ion-selective, or silver electrodes) and selecting corresponding method templates.
Is method validation documentation available?
HOGON provides IQ/OQ protocols, linearity verification reports (±0.1 mV over ±2000 mV range), and repeatability test data (RSD < 0.3% for 10 replicate K₃[Fe(CN)₆] titrations) upon request.
How is firmware updated?
Updates are delivered via USB drive using signed firmware packages; version history and changelogs are published in the HOGON Technical Support Portal.
Does the system support external peristaltic pumps or autosamplers?
Yes—the MT-V6 features RS-485 and TTL-level digital I/O ports for integration with third-party sample handling modules compliant with ANSI/SLAS standards.