HOGON AKF-IS2020C Coulometric Karl Fischer Moisture Titrator
| Brand | HOGON |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Coulometric & Volumetric Karl Fischer Moisture Titrator |
| Measurement Resolution | 0.1 µg (H₂O mass) |
| Water Content Range | 3 µg – 199 mg (0.01 µg detection limit for water mass) |
| Accuracy | ≤0.3% |
| Minimum Dispense | 3 µg |
| Repeatability | 99.7% |
| Linearity (R²) | 0.999 |
| Titration Component | Electrolytic Electrode |
| Titration Control Precision | 0.1 µg |
| Power Supply | 110–240 V AC, 50–61 Hz |
| Data Storage Capacity | 200 test records |
Overview
The HOGON AKF-IS2020C Coulometric Karl Fischer Moisture Titrator is a dual-mode analytical instrument engineered for trace-level water quantification in diverse industrial and research samples. It operates on the electrochemical principle of coulometric Karl Fischer titration—where iodine is generated *in situ* via controlled electrolysis of iodide ions at the anode, reacting stoichiometrically with water according to the classic Karls Fischer reaction: I₂ + SO₂ + H₂O + 3RN + CH₃OH → 2RN·HI + RN·HSO₄CH₃. This method delivers high sensitivity and reproducibility for samples containing water in the sub-microgram to milligram range. Unlike volumetric systems, the coulometric mode eliminates reagent delivery variability, enabling absolute quantification based on Faraday’s law—making it ideal for low-water-content materials such as lithium-ion battery cathode precursors (e.g., LiFePO₄, NMC), pharmaceutical actives, polymer resins, and high-purity solvents. The AKF-IS2020C integrates real-time environmental drift compensation, adaptive endpoint detection, and dual-sample introduction pathways—ensuring robust performance across laboratories operating under variable ambient conditions.
Key Features
- 7-inch full-color capacitive touchscreen with intuitive graphical interface and numeric keypad—designed for operation by non-specialist personnel without training overhead.
- HOGON Intelligent Detection Technology: automatic solvent balance monitoring, dynamic endpoint recognition, and real-time correction for ambient humidity and temperature drift.
- High-precision coulometric electrolysis control with 0.1 µg resolution and ≤0.3% measurement accuracy—validated against certified reference materials per ISO 8533 and ASTM E203.
- Dual sample introduction modes: direct injection into titration cell for liquids and low-viscosity suspensions; and headspace evaporation coupling via optional heated sample evaporator (temperature programmable from ambient to 300 °C).
- Integrated carrier gas management: digital mass flow display (N₂ or dry air), insulated heated transfer line (adjustable up to 150 °C) to prevent condensation, and real-time temperature/flow logging.
- Triple-tier user access control (Operator, Supervisor, Administrator) with password protection, electronic signatures, and audit-trail-enabled session logs—fully compliant with GLP and FDA 21 CFR Part 11 requirements.
- Onboard method library supporting customizable protocols for gases, viscous liquids, solids, and hygroscopic powders—including auto-switching between coulometric and volumetric modes where applicable.
Sample Compatibility & Compliance
The AKF-IS2020C accommodates a broad spectrum of sample matrices—including but not limited to lithium transition metal oxides, graphite anode materials, silicone elastomers, polyolefin pellets, lubricating greases, lyophilized APIs, and organic solvents. Its headspace evaporation configuration enables reliable analysis of thermally labile or high-boiling-point substances (e.g., polymers, waxes, crude oils) without chemical interference from non-volatile components. All system firmware and data handling routines are designed to meet international regulatory expectations: ISO/IEC 17025:2017 clause 7.7 (result reporting), USP , EP 2.5.12, and JP 2.05. Full traceability is ensured through timestamped raw data storage (200+ records), method versioning, and immutable audit trails exportable in CSV or PDF format.
Software & Data Management
Embedded firmware supports method-driven workflows with editable parameters—including titration current, endpoint threshold, drift compensation window, and evaporation ramp profiles. All measurements are time-stamped and associated with operator ID, method name, sample ID, and environmental metadata (cell temperature, carrier gas flow rate, ambient humidity). Data export is compatible with LIMS integration via USB or optional Ethernet module. Electronic signatures and role-based permissions enforce accountability during method modification or result approval. System validation documentation—including IQ/OQ templates, calibration certificates, and performance verification reports—is provided to support laboratory accreditation processes.
Applications
- Quality control of battery electrode materials: quantifying residual moisture in LiCoO₂, LiMn₂O₄, and solid-state electrolyte powders prior to cell assembly.
- Pharmaceutical manufacturing: water content verification in excipients, APIs, and final dosage forms per ICH Q5C stability guidelines.
- Polymer processing: moisture monitoring in PET, PA6, and PC granules to prevent hydrolytic degradation during extrusion.
- Fuel and lubricant testing: detecting trace water in aviation kerosene (ASTM D6304), transformer oil (IEC 60814), and synthetic ester-based greases.
- Electrolyte formulation: precise water determination in LiPF₆ solutions and fluorinated carbonate blends where ppm-level H₂O induces HF generation.
FAQ
What distinguishes coulometric from volumetric Karl Fischer titration?
Coulometric KF generates iodine electrochemically within the titration cell, offering superior precision for samples containing 100 µg). The AKF-IS2020C supports both modes via hardware/software configuration.
Can the instrument analyze solid samples directly?
Yes—via the optional headspace evaporator. Solids are sealed in vials, heated to release bound water, and swept into the titration cell using dry carrier gas. No direct contact between sample matrix and KF reagent occurs.
Is method validation support included?
Yes—factory-supplied IQ/OQ documentation, linearity verification kits (10–100 µg water standards), and drift stability test procedures are provided to facilitate GMP/GLP-compliant implementation.
How is data integrity maintained during power interruption?
All active titrations are automatically saved to non-volatile memory; resumed upon restart with full parameter retention and timestamp continuity.
Does the system support remote diagnostics or service updates?
Firmware updates are performed via USB; remote diagnostic capability requires optional Ethernet module and secure VPN-configured network access—subject to site-specific IT policy approval.
