Optical tensiometer PAT-1P

for liquidsfor surface and interfacial tension measurementdynamic surface and interfacial tension measurement

Overview
The PAT-1P is a compact profile analysis tensiometer for precise surface and interfacial tension and contact angle measurements. USB-powered and manually operated, it is suited to laboratory characterization of liquids and interface studies.

Capabilities

• Surface and interfacial tension measurement (pendent drop, buoyant bubble analysis)
• Contact angle and surface free energy evaluation (sessile drop with optical contour analysis)
• Manual instrument control with x/y/z positioning and manual drop/bubble formation
• Small laboratory footprint; operation via USB without external power supply
• Integrated analysis software with real-time image acquisition, automatic profile fitting and property evaluation

Measurement principle
The instrument analyzes profiles of pendent and sessile drops and buoyant/captive bubbles using contour detection and Young–Laplace fitting to deliver accurate, reproducible results.

Performance highlights

• Surface/interfacial tension range: 10–2000 mN/m
• Contact angle range: 5°–175° (accuracy ±0.3°)
• Industrial CMOS camera up to 25 images/s (1280 × 960 px)
• Optical distortion < 0.05%
• USB interface and USB-powered operation

Analysis & software

• Automated image acquisition and Young–Laplace fitting
• Real-time calculation of surface and interfacial tension
• Contact angle analysis and surface free energy evaluation
• Transient relaxation and Fourier analysis of relaxation measurements
• Semi-automatic focusing; Windows 7–11 supported; free software updates for one year after purchase

Optional modules & accessories

• Automatic dosing module (automatic drop volume and area control)
• Contact angle module (specialized sessile-drop contact angle and surface free energy)
• Precision capillaries for different liquids and applications
• Glass syringes for accurate manual drop and bubble generation
• Thermostated jacket for external circulation bath (optional)

Applications
Education, academic and fundamental research, materials science, surface chemistry studies, routine quality control and laboratory workflows requiring reproducible interface characterization.

Technical specifications

• Model: PAT-1P
• Measurement methods: Young–Laplace fitting; pendent and sessile drop; buoyant and captive bubble analysis
• Surface/interfacial tension range: 10–2000 mN/m
• Contact angle range: 5°–175°; accuracy ±0.3°
• Camera: Industrial CMOS, 1280 × 960 px, up to 25 fps
• Optics: Manual fixed objectives; optical distortion < 0.05%
• Dosing: Manual drop and bubble formation; optional automatic dosing module
• Hardware: Compact base with manual x/y/z axis; manual syringe; LED illumination with adjustable intensity
• Physical data: Dimensions 400 × 200 × 200 mm; weight 3 kg
• Power supply: USB bus powered (no external power supply required)
• Interface: USB
• Software & control: Automated acquisition and fitting; real-time calculations; contact angle analysis; Windows 7–11 support; free updates for one year
• Available accessories: Additional capillaries on request; automatic dosing module; contact angle module; precision and glass syringes