POWEREACH JK99F2 Fully Automated Surface and Interfacial Tensiometer
| Brand | POWEREACH (Shanghai Zhongchen) |
|---|---|
| Origin | Shanghai, China |
| Model | JK99F2 |
| Measurement Range | 0–999.99 mN/m |
| Resolution | 0.01 mN/m |
| Accuracy | ±0.1 mN/m |
| Measurement Methods | Du Noüy Ring Method & Wilhelmy Plate Method |
| Temperature Sensing Accuracy | ±0.1 °C |
| Power Supply | AC 220 V ±5%, <150 W |
| Compliance | GB/T 22237–2008, GB/T 5549–2010, GB/T 6541–1986 |
Overview
The POWEREACH JK99F2 Fully Automated Surface and Interfacial Tensiometer is a precision instrument engineered for the quantitative determination of surface tension (γLV) and liquid–liquid interfacial tension (γLL) using two standardized physical measurement principles: the Du Noüy ring method and the Wilhelmy plate method. Based on force-balance tensiometry—where the detachment or wetting force exerted on a calibrated platinum probe is measured via high-resolution microbalance—the JK99F2 delivers traceable, reproducible results across a broad dynamic range (0–999.99 mN/m). Its dual-method architecture enables method selection based on sample viscosity, volatility, and required temporal resolution: the Wilhelmy plate method supports rapid, real-time monitoring (1–5 s per measurement), while the Du Noüy ring method remains suitable for low-surface-tension systems and legacy protocol alignment. The instrument operates independently via its integrated 7-inch capacitive touchscreen interface and thermal roll printer, eliminating dependency on external computing resources—yet retains full PC connectivity via RS-232 for extended data logging, curve analysis, and regulatory-compliant documentation.
Key Features
- High-precision force transduction system with 0.1 mg analytical balance resolution, enabling sub-mN/m repeatability under controlled environmental conditions (30–85% RH, ambient temperature ±0.1 °C via embedded Pt100 sensor)
- Dual-probe compatibility: factory-calibrated platinum ring (40–50 mL sample volume) and platinum plate (20–30 mL), both supplied with certified calibration weights and traceable verification protocols
- Motorized Z-axis platform with servo-controlled stepper drive and precision lead screw—ensuring vibration-free vertical movement, positional accuracy ≤1 µm, and silent operation during dynamic interfacial equilibration
- Integrated thermoregulated sample stage with fluidic ports for external recirculating chiller connection (e.g., Julabo, Huber), supporting ISO/ASTM-compliant temperature-controlled measurements from 5 °C to 80 °C (chiller not included)
- Onboard firmware with built-in correction algorithms for buoyancy, meniscus curvature, and plate/ring geometry—eliminating manual calculation per ISO 1409 and ASTM D971 standards
- One-touch zeroing (hardware and software), automatic baseline drift compensation, and programmable lift/drop profiles for method development and educational use cases
Sample Compatibility & Compliance
The JK99F2 accommodates a wide spectrum of Newtonian and non-Newtonian liquids—including aqueous surfactant solutions, polymer melts, crude oils, lubricants, inks, coatings, pharmaceutical emulsions, and biological fluids—with demonstrated performance up to ~1000 mPa·s viscosity (per Wilhelmy plate method). It meets national standard requirements per GB/T 22237–2008 (surfactant surface tension), GB/T 5549–2010 (interfacial tension of petroleum products), and GB/T 6541–1986 (oil–water interfacial tension). While not pre-certified to ISO 6889 or ASTM D1331, its measurement methodology and uncertainty budget align with the metrological foundations of those standards. For regulated environments, raw data export (CSV, TXT), audit trail-enabled software logs, and user-accessible calibration records support GLP/GMP documentation workflows. Instrument validation documentation—including as-delivered sensitivity, linearity, and repeatability reports—is provided with each unit.
Software & Data Management
The bundled Windows-based application (v5.2+, compatible with Windows 10/11 64-bit) provides synchronized real-time plotting of force vs. time curves, automatic peak detection, multi-point equilibrium averaging, and customizable report generation with embedded metadata (operator ID, timestamp, method parameters, environmental readings). All measurement sessions are timestamped and stored with SHA-256 hash integrity checks. Export formats include CSV (for LIMS integration), PDF (with digital signature fields), and PNG vector graphics. Software updates are delivered free-of-charge for the instrument’s operational lifetime and include backward-compatible data migration tools. Remote diagnostics and firmware upgrades are supported via secure HTTPS channel; no cloud storage or telemetry is enabled by default.
Applications
This tensiometer serves critical quality control and R&D functions across multiple industrial sectors: formulation optimization of surfactants and dispersants in paints and inks; stability assessment of oil-in-water and water-in-oil emulsions in food and pharmaceutical manufacturing; wettability evaluation of functional coatings on semiconductor substrates; interfacial aging studies in enhanced oil recovery (EOR) research; and surface activity screening in green chemistry and nanomaterial synthesis. Academic users employ it for teaching capillary phenomena, Langmuir isotherm derivation, and critical micelle concentration (CMC) determination. Its portability and self-contained operation make it suitable for field-deployable testing in refinery QC labs and contract testing facilities requiring rapid turnaround without IT infrastructure dependencies.
FAQ
Does the JK99F2 comply with FDA 21 CFR Part 11?
The instrument itself is not Part 11–certified, but its software supports electronic signatures, audit trails, and data integrity controls required for compliance when deployed within validated laboratory information management systems (LIMS) or electronic lab notebooks (ELN). Full validation documentation is available upon request.
Can the JK99F2 measure dynamic surface tension?
Yes—via the Wilhelmy plate method, it captures time-resolved surface tension evolution at millisecond-scale sampling intervals, enabling diffusion-controlled adsorption kinetics modeling per Ward–Tordai theory.
Is external temperature control mandatory?
No—ambient-temperature measurements are fully supported. However, the integrated Peltier-ready stage allows seamless integration with external chillers/heaters for ISO/ASTM temperature-controlled protocols.
What maintenance is required for long-term accuracy?
Annual recalibration using supplied stainless-steel calibration weights and reference liquids (e.g., ultrapure water, diiodomethane) is recommended. Platinum probes require periodic cleaning in aqua regia followed by flame annealing per ASTM D1331 Annex A1 guidelines.
Is technical support available outside China?
Yes—remote assistance, application consulting, and software troubleshooting are provided globally in English. On-site service contracts are available through authorized regional partners in North America, Europe, and APAC.
