HOGON MT-V6 Automatic Precipitation Potentiometric Titrator

Overview

The HOGON MT-V6 Automatic Precipitation Potentiometric Titrator is a dedicated, high-precision electrochemical analyzer engineered for potentiometric titrations based on precipitation reactions—primarily leveraging the Nernstian response of ion-selective electrodes to detect stoichiometric endpoints. It operates on the principle of monitoring real-time potential shifts across a reference–indicator electrode pair as titrant (e.g., AgNO₃, EDTA, or NH₄SCN) is incrementally delivered into the analyte solution. The instrument identifies inflection points in the E–V curve (potential vs. volume), enabling quantitative determination of halides (Cl⁻, Br⁻, I⁻), sulfates, heavy metal ions (Pb²⁺, Cd²⁺), and multivalent cations (Ca²⁺, Mg²⁺) via classical methods including Mohr, Volhard, and Fajans titrations. Designed for compliance with ISO 8655-3 (burette accuracy), ASTM D129 (sulfur analysis), and USP (potentiometric titration), the MT-V6 supports GLP/GMP-aligned workflows through audit-trail-capable software and hardware-level endpoint reproducibility.

Key Features

• Full automation from sample introduction to report generation—including auto-sampling (with optional autosampler integration), motorized burette dispensing, magnetic stirring control, and adaptive endpoint recognition.
• Dual-burette configuration support: Standard 20 mL glass burette (1 µL minimum dispensing increment) and optional 10 mL high-resolution burette (0.5 µL resolution) for trace-level or low-volume applications.
• High-fidelity potentiometric measurement circuitry with ±0.1 mV accuracy and 0.1 mV resolution over ±2000 mV range, optimized for low-noise signal acquisition during slow-kinetic precipitation equilibria.
• Multi-algorithm endpoint detection: First-derivative (dE/dV), second-derivative (d²E/dV²), fixed potential threshold, and slope-based inflection search—configurable per method to accommodate variable reaction kinetics and precipitate solubility profiles.
• 7-inch capacitive color touchscreen interface with intuitive icon-driven navigation, multi-language support (English, German, French, Spanish, Chinese), and on-device method library management.
• Modular architecture enabling field-upgradable components: dual-station titration modules, 16-position autosamplers, thermometric sensor inputs, and auxiliary pH/mV/ISE input channels for hybrid titration modes.

Sample Compatibility & Compliance

The MT-V6 accommodates aqueous, non-aqueous, and mixed-solvent matrices typical in environmental, geological, and industrial QA/QC labs—including turbid water samples, digested soil extracts, acid-leached ore solutions, and pharmaceutical excipient slurries. Electrode compatibility spans silver/silver chloride (Ag/AgCl), calomel (SCE), solid-state halide-selective electrodes, and custom ISEs for Pb²⁺ or CrO₄²⁻. All firmware and data handling comply with FDA 21 CFR Part 11 requirements for electronic records and signatures when configured with user authentication, audit trail logging, and electronic signature capture. Instrument design conforms to IEC 61010-1 safety standards and electromagnetic compatibility (EMC) per EN 61326-1.

Software & Data Management

Embedded HOGON TitraSoft™ v4.2 provides method development, sequence programming, real-time curve visualization, and automated report generation (PDF/CSV/XLSX). Data storage includes ≥10,000 titration records with full metadata (operator ID, timestamp, electrode calibration history, raw E–V data, derivative overlays). USB 2.0 host port enables direct export to external drives; Ethernet (RJ45) and optional Wi-Fi support LIMS/MES integration via HL7, ASTM E1384, or custom TCP/IP protocols. Audit trails record all parameter modifications, calibration events, and result approvals—retained for ≥36 months with tamper-evident hashing.

Applications

• Environmental Monitoring: Quantification of Cl⁻, SO₄²⁻, and heavy metals (Ag⁺-titrated Pb²⁺/Cd²⁺) in wastewater, surface water, and leachate per EPA Method 300.0 and ISO 9297.
• Geological & Mining Labs: Determination of halogen content in silicate melts, carbonate dissolution residues, and sulfide concentrates using Volhard back-titration protocols.
• Chemical Manufacturing: In-process control of chloride impurities in caustic soda, sulfate in titanium dioxide pigments, and free acid in catalyst precursors.
• Pharmaceutical QC: Assay of sodium chloride in saline formulations, iodide in contrast agents, and residual silver in antimicrobial coatings per USP monographs.
• Food & Beverage: Salt (NaCl) content verification in dairy products and processed meats via argentometric titration with potentiometric endpoint confirmation.

FAQ

What electrode types are supported for precipitation titrations?
The MT-V6 accepts standard double-junction reference electrodes (e.g., Ag/AgCl/KCl 3 M), silver indicator electrodes, and solid-state halide-selective electrodes—all with BNC or DIN connectors.
Can the instrument perform non-precipitation titrations?
Yes. With appropriate electrode selection and method reconfiguration, it supports redox, acid-base, and complexometric titrations, including EDTA titrations for Ca²⁺/Mg²⁺ hardness analysis.
Is validation documentation provided for GxP environments?
Yes. Factory-issued IQ/OQ documentation, metrological traceability certificates (NIM-calibrated burettes and meters), and software validation packages (including risk assessment and test scripts) are available upon request.
How is maintenance performed on the burette system?
The glass burette features PTFE-coated piston and ceramic seal assembly; cleaning and recalibration procedures are guided stepwise via the touchscreen interface, with automatic volumetric error correction using gravimetric checks.
Does the system support remote monitoring or cloud-based data backup?
Local network access enables remote desktop viewing and method upload/download; cloud synchronization requires on-premise server deployment (e.g., NAS or LIMS-hosted database) due to data sovereignty and security policy constraints.