TimePower TP-553 Automated Coulometric Karl Fischer Moisture Analyzer
| Brand | TimePower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Coulometric Karl Fischer Moisture Analyzer |
| Measurement Resolution | 0.1 µg |
| Water Content Range | 1 ppm to 100% (w/w) |
| Accuracy | ≤0.3% RSD |
| Minimum Dispensing Increment | 1/2000 of burette volume |
| Titration Control Precision | ±20% for 3 µg H₂O |
| Electrolysis Current | 0–400 mA |
| Maximum Electrolysis Rate | ≤2.4 mg H₂O/min |
| Operating Temperature | 20–30 °C |
| Relative Humidity Limit | ≤85% RH |
| Power Supply | AC 220 V ±10%, 50 Hz ±10% |
| Power Consumption | ≤30 W |
| Dimensions (W×D×H) | 320 × 240 × 200 mm |
| Net Weight | 5 kg |
Overview
The TimePower TP-553 Automated Coulometric Karl Fischer Moisture Analyzer is a precision laboratory instrument engineered for trace-level water quantification in diverse sample matrices using the electrochemical principle of coulometric Karl Fischer titration. Unlike volumetric methods, this system generates iodine *in situ* via controlled electrolysis of an iodide-containing reagent, enabling direct stoichiometric determination of water content based on Faraday’s law. With a detection limit of 3 µg absolute water and resolution down to 0.1 µg, the TP-553 delivers high reproducibility for samples containing 1 ppm to 100% water—making it suitable for stringent quality control in regulated environments where moisture critically affects stability, reactivity, or shelf life.
Key Features
- Coulometric detection architecture with real-time current monitoring and adaptive electrolysis control (0–400 mA range)
- Auto-titration sequence with programmable endpoint detection, drift compensation, and solvent blank subtraction
- High-precision dual-electrode cell design optimized for low-drift, stable baseline performance
- Integrated sample introduction port compatible with solid, liquid, and gas-phase samples via optional vaporizer or headspace adapter
- Robust thermal management ensuring stable operation within 20–30 °C ambient range
- Low power consumption (≤30 W) and compact footprint (320 × 240 × 200 mm), ideal for benchtop deployment in QC labs
Sample Compatibility & Compliance
The TP-553 supports analysis of polar and non-polar matrices including alcohols, hydrocarbons, esters, ethers, organic acids, amines, pharmaceutical actives, polymers, lubricants, and transformer oils. It complies with multiple standardized test methods including GB/T 7600 (for insulating oils), GB/T 6283 (general chemical products), SH/T 0246 (light petroleum products), and SH/T 0255 (additive packages). While not pre-certified for FDA 21 CFR Part 11, its audit-ready data logging structure—including timestamped method parameters, raw current curves, endpoint confirmation flags, and operator ID fields—supports GLP/GMP-aligned documentation workflows when deployed with validated SOPs and electronic signature protocols.
Software & Data Management
The embedded firmware provides guided method setup, multi-point calibration verification, and automated report generation in CSV and PDF formats. All measurement records—including titration curves, calculated water mass (µg), concentration (% w/w or ppm), relative standard deviation, and environmental metadata—are stored locally with time-stamped audit trails. Data export supports integration into LIMS platforms via USB or RS-232 interface. Optional PC-based software enables advanced statistical analysis (e.g., trend monitoring, control charting per ISO 8258) and batch reporting compliant with internal QA requirements.
Applications
- Pharmaceutical manufacturing: Residual moisture testing of APIs and excipients per USP & EP monographs
- Power industry: Water-in-oil analysis of transformer and turbine oils per IEC 60814 and ASTM D6304
- Petrochemical QC: Moisture verification in gasoline, jet fuel, and biodiesel per ASTM D6304 and D7557
- Chemical synthesis: Reaction intermediate drying validation and solvent purity assessment
- Food ingredient testing: Water activity correlation studies for hygroscopic powders and emulsifiers
- Electronics materials: Moisture screening of solder pastes and encapsulation resins affecting dielectric integrity
FAQ
What principle does the TP-553 use for moisture detection?
It employs coulometric Karl Fischer titration, where iodine is generated electrochemically in proportion to the charge passed, enabling precise stoichiometric quantification of water.
Can the instrument analyze solid samples directly?
Yes—via integrated oven-assisted headspace sampling or manual dissolution in KF-compatible solvents (e.g., chloroform/methanol mixtures).
Is method validation support available?
The system includes built-in repeatability checks, linearity verification tools, and blank correction routines aligned with ICH Q2(R2) guidance for analytical procedure validation.
Does it meet ISO/IEC 17025 requirements for accredited testing labs?
When operated under documented calibration schedules, environmental controls, and trained personnel, the TP-553 satisfies technical competence criteria for moisture testing; full accreditation requires lab-specific validation and uncertainty budgeting.
How is data integrity ensured during long-term operation?
All measurements are immutably timestamped, and firmware prevents post-acquisition editing of raw current/time datasets—supporting ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).
