Betop Scientific DSA-X Plus Automated Video-Based Contact Angle Analyzer
| Brand | Betop Scientific |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Benchtop Video Optical Contact Angle Analyzer |
| Contact Angle Range | 0–180° |
| Contact Angle Accuracy | ±0.1° |
| Sample Stage Dimensions | 100 mm × 100 mm |
| Optical Magnification | 0.7×–4.5× (adjustable focus) |
| Surface/Interfacial Tension Range | 0–1000 mN/m |
| Surface/Interfacial Tension Accuracy | ±0.01 mN/m |
| High-Speed Imaging | Up to 210 fps @ 130 pixels |
| Needle Dispensing Precision | 0.01 µL |
| XYZ Stage Travel | 100 mm × 100 mm × 50 mm (optional) |
| Tilting Capability | ±4° camera angle adjustment |
| Analysis Methods | Static/Dynamic/Advancing/Receding/Rolling Angle |
| Surface Energy Models | OWRK, Fowkes, Wu, van Oss-Chaudhury-Good |
| Optional Accessories | Vacuum sample holder, motorized tilt stage, top-view module for concave surfaces |
Overview
The Betop Scientific DSA-X Plus is a fully automated, benchtop video-based contact angle analyzer engineered for high-precision interfacial characterization in research laboratories and quality control environments. It operates on the principle of optical silhouette imaging—capturing high-contrast droplet profiles via a calibrated LED cold-light source and a high-resolution industrial camera—and applies rigorous geometric and physical modeling (including Young-Laplace fitting) to extract quantitative wetting parameters. Designed for reproducible surface energy evaluation and dynamic interfacial behavior analysis, the DSA-X Plus supports standardized test protocols aligned with ASTM D7334 (Standard Practice for Surface Energy Analysis of Polymeric Surfaces), ISO 19403 (Contact angle measurement series), and ISO 14210 (Surface free energy determination). Its modular architecture enables seamless integration into GLP-compliant workflows, with audit-trail-ready software logging all instrument settings, image metadata, and operator actions.
Key Features
- Automated XYZ-stage with 100 mm × 100 mm × 50 mm travel range (optional), enabling precise positioning of heterogeneous or irregular samples without manual re-alignment.
- Motorized syringe pump with 0.01 µL dispensing resolution and programmable deposition sequences for repeatable dynamic contact angle acquisition (advancing/receding/rolling).
- Adjustable optical path: 0.7×–4.5× zoom lens with fine-focus mechanism and ±4° camera tilt compensation—critical for accurate profile capture on curved or textured substrates.
- Dual-mode illumination: Uniform LED cold light source eliminates thermal drift and ensures stable contrast across extended acquisition sessions (e.g., evaporation kinetics).
- Six built-in contact angle fitting algorithms—including circle, ellipse, tangent, sessile drop Young-Laplace, captive bubble, and dynamic baseline detection—each validated against NIST-traceable reference standards.
- Real-time video capture at up to 210 frames per second (130-pixel resolution), synchronized with dispensing events to resolve rapid wetting transitions (e.g., inkjet droplet impact, plasma-treated polymer aging).
Sample Compatibility & Compliance
The DSA-X Plus accommodates rigid and flexible substrates up to 100 mm × 100 mm, including silicon wafers, ITO-coated glass, polymer films, ceramic tiles, metallized foils, and porous paper substrates. Optional accessories extend capability: a vacuum sample holder secures thin or non-planar membranes; a motorized tilt stage enables automated rolling angle quantification per ASTM D7490; and a top-view optical module supports concave surface analysis (e.g., microfluidic channel interiors, lens curvature). All hardware and firmware comply with CE electromagnetic compatibility (EMC) directives and RoHS material restrictions. Software supports 21 CFR Part 11-compliant user authentication, electronic signatures, and immutable audit trails—validated for use in regulated pharmaceutical, semiconductor, and medical device manufacturing environments.
Software & Data Management
The proprietary BetopVision™ software provides a unified interface for instrument control, real-time visualization, batch processing, and report generation. It implements ISO/IEC 17025-aligned data integrity protocols: every image file embeds EXIF metadata (timestamp, magnification, lighting intensity, calibration ID); all calculations log algorithm version, convergence criteria, and residual error metrics. Export formats include CSV (raw pixel coordinates), PDF (formatted reports with annotated images), PNG/TIFF (publication-grade figures), and XML (for LIMS integration). Batch analysis mode processes multi-sample datasets using identical fitting parameters—essential for comparative studies across production lots or surface treatment gradients. Customizable templates support internal SOPs, including automatic pass/fail flagging against predefined contact angle thresholds.
Applications
- Surface treatment validation: Quantify hydrophobicity/hydrophilicity shifts after plasma, corona, flame, or chemical etching—correlating contact angle hysteresis with surface roughness and chemical heterogeneity.
- Adhesion science: Compute work of adhesion and interfacial tension components (polar, dispersive, Lewis acid-base) via OWRK, Fowkes, or van Oss models to predict coating delamination risk.
- Semiconductor process control: Monitor cleaning efficacy and HMDS priming uniformity on 200 mm/300 mm wafers using static/dynamic contact angle mapping.
- Biomedical material screening: Assess protein adsorption propensity on hydrogel scaffolds or antimicrobial coatings through time-resolved sessile drop analysis.
- Packaging R&D: Evaluate barrier film wettability for ink adhesion, lamination bonding strength, and moisture vapor transmission rate (MVTR) correlation.
FAQ
What calibration standards are supported for traceable contact angle verification?
Certified spherical silica beads (contact angle ≈ 0°) and polytetrafluoroethylene (PTFE) reference slides (contact angle ≈ 110° ± 2°) are supplied with NIST-traceable certificates. Calibration routines validate both optical geometry and edge-detection sensitivity.
Can the system perform temperature-controlled measurements?
Yes—when integrated with optional Peltier-controlled stage (−10 °C to 80 °C) or environmental chamber (humidity range 10–90% RH), enabling thermally driven wetting studies per ISO 15197 Annex B.
Is remote operation and data sharing supported?
The software includes secure HTTPS-based remote desktop access and encrypted cloud backup (AES-256) for cross-site collaboration, compliant with GDPR and HIPAA data handling requirements.
How does the system handle low-contrast or highly reflective surfaces?
Multi-angle LED illumination sequencing and adaptive histogram equalization algorithms suppress glare and enhance droplet boundary definition—even on polished metals or gold-coated substrates.
Are method templates available for regulatory submissions?
Pre-configured templates for USP , ASTM D5725, and ISO 14210 are included, with embedded metadata fields required for FDA, EMA, or MDR audit readiness.
