HOGON AKF-IS2019C Coulometric Karl Fischer Moisture Analyzer for Insoluble Solids
| Brand | HOGON |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Coulometric Karl Fischer Moisture Analyzer |
| Titration Mode | Fully Automatic |
| Measurement Resolution | 0.01 µg |
| Water Mass Range | 3 µg – 199 mg |
| Measurement Precision | ±1 mV |
| Minimum Dispensing Increment | 1/2000 of Burette Volume |
| Repeatability | ≥99% |
| Linearity (R²) | 0.995 |
| Electrode Type | Electrolytic Electrode |
| Current Control Accuracy | ±1 mA |
| Power Supply | 110–240 V AC, 50–60 Hz |
| Data Storage | Internal Non-Volatile Memory |
| Compliance | SH/T 1770–2010 |
Overview
The HOGON AKF-IS2019C is a dedicated coulometric Karl Fischer moisture analyzer engineered for precise, trace-level water quantification in insoluble or non-dissolving solid matrices—such as polyethylene pipes, automotive elastomeric seals, silicone-based construction adhesives, and encapsulated electronic packaging materials. Unlike volumetric KF systems, the AKF-IS2019C generates iodine electrochemically via controlled current across a dual-electrode cell, eliminating reagent delivery variability and enabling direct mass-based quantification of water at sub-microgram resolution. Its design adheres to the fundamental stoichiometric principle of the Karl Fischer reaction (I₂ + SO₂ + H₂O + base → 2HI + sulfate), where each coulomb of charge corresponds to a fixed mass of water (10.72 µg H₂O/C), ensuring inherent traceability and metrological rigor. The instrument operates without solvent dissolution pre-treatment, making it uniquely suited for samples that resist conventional KF solvents (e.g., cross-linked polymers, filled composites, or hydrophobic sealants) while maintaining compliance with SH/T 1770–2010 for polyethylene moisture determination.
Key Features
- Coulometric detection architecture delivering 0.01 µg resolution and ≤1 mV baseline stability for robust low-moisture analysis (0.001–0.1 wt%)
- Integrated dual-heat-source sample chamber with programmable ramping (up to 250 °C) and real-time temperature monitoring for controlled thermal release of bound water
- 12 V DC input compatibility—supports external lithium battery packs and vehicle-mounted operation, enabling field-deployable QC in manufacturing lines or construction sites
- AI-driven auto-tuning (AT) algorithm for dynamic current regulation, minimizing over-titration and drift during extended runs
- Capacitive color touchscreen interface with intuitive workflow navigation, multi-language support (EN/DE/FR/ES), and password-protected method management
- Configurable analytical parameters: delay time, drift compensation window, blank subtraction, fixed endpoint duration, and adaptive endpoint detection
Sample Compatibility & Compliance
The AKF-IS2019C accommodates standard 10 mL and 20 mL headspace vials with septum-sealed caps, allowing sealed thermal extraction prior to coulometric titration—critical for volatile-loss-sensitive or oxidation-prone solids. It meets the technical requirements of SH/T 1770–2010 for polyethylene moisture testing and supports method validation under ISO/IEC 17025:2017. While not FDA 21 CFR Part 11–certified out-of-box, its audit trail-capable data logging (timestamped results, operator ID, method version, environmental logs) provides foundational traceability for GLP/GMP-aligned environments. All firmware and calibration records are exportable in CSV format for third-party LIMS integration.
Software & Data Management
Instrument control and data acquisition are managed through embedded firmware with no PC dependency. Each measurement stores full metadata—including titration curve (current vs. time), endpoint confirmation logic, drift correction values, and thermal profile snapshots—in non-volatile flash memory (≥10,000 result capacity). Export is performed via USB-A port to FAT32-formatted drives; no proprietary software installation is required. Raw data files include ASCII-encoded curves and structured JSON headers containing calibration constants, electrode status flags, and user-defined annotations—enabling post-acquisition statistical evaluation in Excel, Python, or validated QA platforms.
Applications
- Quality control of polymer-based infrastructure materials: PVC conduit, HDPE geomembranes, and asphalt-modifying additives
- In-process verification of moisture content in cured automotive gaskets, EPDM weatherstripping, and urethane foam sealants
- Release testing of electronic conformal coatings, potting compounds, and die-attach epoxies per IPC-J-STD-033 guidelines
- Stability assessment of desiccant-filled packaging systems and pharmaceutical excipient blends with hygroscopic carriers
- Research-grade quantification of residual monomer hydration in cross-linked acrylate networks and silicone elastomers
FAQ
What sample preparation is required for insoluble solids?
No solvent dissolution is needed. Samples are weighed directly into headspace vials, sealed, heated to release occluded water vapor, and transferred via carrier gas to the coulometric cell.
Can the AKF-IS2019C comply with ISO 8536-5 or USP <921>?
It satisfies the instrumental performance criteria for coulometric KF methods in these standards; however, full compliance requires lab-specific method validation including specificity, LOD/LOQ, and ruggedness testing.
Is electrode maintenance automated?
No—electrolytic electrodes require periodic cleaning with methanol and visual inspection for platinum black deposition; the system logs cumulative electrolysis charge to assist preventive maintenance scheduling.
Does the instrument support external balance integration?
Yes—RS-232 interface enables direct tare and weight transfer from METTLER TOLEDO, SARTORIUS, or OHAUS balances meeting ASTM E2594–19 communication protocols.
How is calibration verified?
Using certified 1.00 mg/g and 10.0 mg/g water-in-dry-methanol standards traceable to NIST SRM 2890; calibration verification reports include recovery %, RSD, and linearity slope deviation.
