Kruss Contact Angle Tester ADVANCE Series

Overview

The Kruss ADVANCE Series Contact Angle Tester is a high-precision benchtop instrument engineered for quantitative characterization of solid–liquid interfacial phenomena. It operates on the principle of optical sessile drop analysis, utilizing high-resolution digital imaging and advanced edge-detection algorithms to determine contact angle values from the geometric contour of a liquid droplet deposited on a solid substrate. This methodology enables direct, non-invasive measurement of wettability, surface energy, and interfacial tension—critical parameters in materials science, pharmaceutical formulation, coating development, and microfluidic device design. The system integrates a Leica M Plan Apo fixed-focus lens with optimized depth-of-field and chromatic correction, ensuring consistent image fidelity across diverse sample topographies and illumination conditions. Designed and assembled in Hamburg, Germany, the ADVANCE platform complies with ISO 19403-2 (contact angle measurement), ISO 19403-3 (surface free energy calculation), and ASTM D7334 (surface energy of polymer films).

Key Features

• Precision optical measurement with ±0.3° contact angle accuracy and 0–180° full-range capability, validated per ISO 19403 calibration protocols.
• Benchtop architecture featuring a manually adjustable Z-axis stage (105 × 105 mm active area) for precise sample positioning under the optical path.
• High-speed CMOS camera capable of up to 2000 frames per second, enabling dynamic contact angle analysis during droplet deposition, spreading, or retraction.
• Native 1900 × 1200 pixel resolution imaging with Leica M Plan Apo optics—optimized for low distortion, high contrast, and repeatable focus stability over extended operational cycles.
• Modular ADVANCE software v6.x with fully programmable workflow logic, supporting automated multi-point measurements, time-lapse acquisition, and batch processing of heterogeneous sample sets.
• Background noise suppression engine and user-definable region-of-interest (ROI) masking—enhancing measurement robustness on textured, porous, or optically heterogeneous substrates.

Sample Compatibility & Compliance

The ADVANCE system accommodates samples up to 320 mm (W) × ∞ (D) × 165 mm (H), permitting evaluation of large-area coatings, flexible films, and irregularly shaped industrial components. Its open-stage design supports both rigid and compliant substrates—including polymers, metals, ceramics, textiles, and biological membranes—without requiring vacuum fixation or thermal stabilization. All measurement routines adhere to GLP-compliant data integrity standards: audit trails, electronic signatures, and immutable raw-image archiving are enforced via ADVANCE’s built-in security module. The platform meets FDA 21 CFR Part 11 requirements for regulated environments when deployed with networked Windows Server authentication and encrypted database logging.

Software & Data Management

ADVANCE software provides a slide-based modular interface that decouples image acquisition, droplet analysis, and reporting modules—allowing users to configure custom pipelines without scripting. Real-time video recording with timestamped metadata ensures traceability of transient wetting behavior. Calculated parameters—including static/dynamic contact angles, surface free energy (via Owens–Wendt, Wu, or Fowkes models), and interfacial tension (via pendant drop analysis)—are exported in CSV, PDF, and XML formats compatible with LIMS and ELN systems. Version-controlled method templates support cross-laboratory reproducibility, while automated calibration verification (using certified reference surfaces) maintains long-term measurement consistency.

Applications

• Quality control of hydrophobic/hydrophilic coatings in medical device manufacturing (e.g., catheter surface modification).
• Surface energy mapping of printed electronics substrates to optimize ink adhesion and film uniformity.
• Stability assessment of emulsions and foams via pendant drop interfacial tension kinetics.
• Characterization of plasma-treated polymer surfaces for automotive and aerospace composite bonding.
• Regulatory documentation for USP and compliance in sterile pharmaceutical packaging validation.
• Academic research in biomaterials, where contact angle hysteresis correlates with protein adsorption propensity.

FAQ

Does the ADVANCE system support automated calibration verification?
Yes—users can schedule periodic calibration checks using NIST-traceable reference surfaces (e.g., PTFE, silicon wafer) with pass/fail thresholds defined per ISO 19403-4.
Can ADVANCE software integrate with enterprise laboratory information management systems (LIMS)?
Yes—via standardized ODBC and REST API interfaces; raw images and processed results are stored in SQLite or Microsoft SQL Server backends with configurable retention policies.
Is pendant drop analysis supported for interfacial tension measurement?
Yes—the ADVANCE platform includes dedicated pendant drop modules compliant with ISO 19403-3, enabling accurate determination of liquid–liquid and liquid–gas interfacial tensions down to 0.1 mN/m.
What level of technical support is provided for international customers?
Kruss offers remote diagnostics, application-specific protocol development, and on-site training through authorized regional service centers in North America, EMEA, and APAC—with hardware warranty coverage extending to 24 months post-installation.