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| Brand | Starwood |
|---|---|
| Model | SDW-18CS |
| Type | Research-Grade Fully Automated Optical Contact Angle Analyzer |
| Construction Material | Aerospace-Grade Aluminum Alloy |
| Power Supply | 220 V, 50–60 Hz |
| Power Consumption | 10 W |
| Dimensions (W × L × H) | 655 × 180 × 520 mm |
| Weight | ~16 kg |
| Sample Stage Travel (X/Y/Z) | 30/50/30 mm (manual, 0.1 mm resolution) |
| Leveling | Full-system + camera-level XY precision leveling (included professional-grade XY level) |
| Sample Platform Size | 130 × 150 mm (customizable) |
| Max Sample Size | 200 (W) × ∞ (L) × 30 (H) mm |
| Dispensing System Y/Z Travel | 40/35 mm (0.1 mm resolution) |
| Dropping Stroke | 60 mm (0.01 mm resolution) |
| Droplet Volume Precision | 0.01 µL |
| Syringe Capacity | 500 µL (auto liquid-level detection) |
| Standard Needles | 0.5 mm stainless steel (20 pcs), 0.25 mm superhydrophobic needle (20 pcs) |
| Camera | Japan Sony industrial-grade CMOS (Onsemi global shutter), 1/1.8″ progressive scan, 1280 × 1024 resolution |
| Lens Magnification | 0.7×–4.5×, focus adjustment ±2.5 mm |
| Max Frame Rate | 80 fps |
| Light Source | US-sourced industrial white cold LED (400–760 nm), quartz diffuser for uniform illumination, 50,000 h lifetime, PWM + software brightness control |
| Contact Angle Methods | Sessile drop, pendant drop, captive bubble, tilting plate (dynamic) |
| Static CA Fitting Algorithms | Circle, Oblique Circle, Ellipse, Oblique Ellipse, B-Snake, concave/convex surface fitting |
| Dynamic CA Analysis | Advancing, receding, hysteresis angles (batch image & video-based analysis) |
| Baseline Detection | Auto/manual |
| Angular Range | 0° < θ < 180° |
| Angular Accuracy | ±0.1° |
| Angular Resolution | 0.001° |
| Surface Energy Models | Fowkes, OWRK, Zisman, EOS, Acid-Base Theory, Wu Harmonic Mean, Extended Fowkes (37 preloaded liquids |
| Surface Tension Range | 0.1–2000 mN/m |
| Surface Tension Accuracy | ±0.01 mN/m |
| Work of Adhesion / Spreading Coefficient / Adhesion Tension | Auto-calculated, resolution 0.001 mN/m |
| Software | CA V2.0 (static/dynamic CA + surface energy + interfacial tension modules) |
| OS Requirement | Windows 10 (64-bit) |
| Compliance | Designed for GLP/GMP-aligned workflows |
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