TrueDrop® Video Optical Contact Angle Measuring Instrument

TrueDrop ® The video optical contact angle measuring device SL150B is an entry-level interface chemical analysis equipment designed based on standard image analysis methods, suitable for precise measurement of contact angle and interface tension values. This device combines modular concepts with high cost-effectiveness advantages, providing an economical and efficient solution for teaching, basic scientific research, and industrial quality inspection.

TrueDrop ® Core Technology and Configuration of Video Optical Contact Angle Measuring Instrument SL150B

• Modular design: supports flexible combination of multiple components, adapts to testing requirements such as dynamic/static contact angle, liquid gas/liquid liquid interface tension, etc.

• Precision hardware system:

• Industrial grade optical imaging: High definition contour lens and quartz glass soft light source ensure precise imaging of droplet contours.

• Precision titration system: supports manual or semi-automatic droplet control, easy to operate.

• CAST ® 2.0 Analysis Software:

• Contact angle and surface free energy analysis: supports dynamic/static contact angle, forward/backward angle (liquid addition/subtraction method), and calculation of solid surface free energy components (dispersion force, polarity force, hydrogen bonding force).

• Interface tension testing: Based on the Pendant Drop method, liquid gas/liquid-liquid interface tension measurement is achieved.

Application scenarios

• Teaching and Training: Basic Wettability Teaching Experiments in Universities and Research Institutions.

• Industrial quality inspection: rapid assessment of surface properties of coatings, inks, cleaning agents, and other products.

• Materials research: Surface free energy analysis of polymers, films, fibers, and other materials.

technical advantage

• High cost-effectiveness: Simplify design to reduce usage costs, while balancing core functionality and practicality.

• User friendly: Modular structure simplifies the experimental process and adapts to different user needs.

• Data reliability: Based on image analysis and standardized algorithms, ensure the accuracy of measurement values.

Service Support
We are committed to providing instruments and equipment with stable performance and reasonable prices, and supporting customer research and quality control needs through professional technical services to help improve experimental efficiency.

Definition of contact angle

The angle formed when a small liquid droplet is dropped on a solid horizontal plane and the liquid phase is sandwiched between the gas-liquid interface and the solid-liquid interface at the solid liquid gas three-phase boundary point on the surface of the solid is called the contact angle.

Application Scope Table

Compliance with standard table

Technical characteristics of SL150 series contact angle meter

1. Precision Machinery and Control Systems

• Cross linear guide rail technology:

• The manual control accuracy reaches 0.01mm, and the software control accuracy is 0.5 μ m, ensuring stability and repeatability.

• Multidimensional mechanical structure design:

• 2XYZ+3 horizontal adjustment system coordinates the operation of the sample stage, camera, and injection system to reduce mechanical vibration.

• High precision infusion pump:

• The droplet control accuracy can reach 0.02 μ L (expandable to nL level), suitable for testing superhydrophobic materials and high viscosity samples.

• Integrated aviation aluminum fuselage: lightweight design (considering strength), easy to operate and maintain in the laboratory.

2. Specialized optical imaging system

• Adjustable LED cold light source: adjustable brightness to prevent droplet evaporation and ensure clear contours.

• High depth industrial lens: suitable for imaging complex sample surfaces, with a magnification of 0.35-4.5X.

• High speed camera system:

• Standard configuration: 87 frames per second camera (WVGA format), optional 130M/300M/500M resolution camera.

• Support AOI technology high-speed cameras (100-1000 frames per second) and GigE cameras to enhance dynamic capture capabilities.

• Quartz glass shading film: optimizes the uniformity of background light, resulting in higher imaging contrast.

3. Intelligent Software System (CAST) ™ 2.0）

• Diversified droplet analysis:

• Supports 6 droplet forms, including stop drip (2/3 state), suspended drip, bubble capture method, insertion plate method, oscillation drip method, etc.

• Calculation of contact angle and surface free energy:

• 7 algorithms and 20 fitting techniques: including θ/2 method, ellipse fitting method, Young Laplace equation fitting (fourth generation technique), etc.

• 12 surface free energy models, such as Equation of State and Acid base method, are used to analyze components such as dispersion force, polarity force, hydrogen bonding force, etc.

• Dynamic wetting behavior analysis:

• Measurement of forward/backward angle, rolling angle, and time-dependent contact angle.

• Surface correction technology: supports contact angle analysis of concave or convex surfaces.

• Interface tension test:

• Based on the Young Laplace equation, adapt to liquid gas, liquid-liquid systems, and medium to high viscosity samples.

• The oscillation drop method is used to test the dynamic tension of surfactants.

• Database management:

• Real time data saving and image association, supporting historical record query, modification, backup, and export (Excel/BMP format).

• Fully automated operation:

• One click completion of image capture, calculation, and data saving, supporting manual correction and real-time data display.

4. Humanized design

• Modular structure:

• Removable injection system: compatible with fine needle tubes and PTFE needle tubes, resistant to acid and alkali corrosion.

• Four dimensional horizontal adjustment: The sample stage has a two-dimensional leveling function, which is suitable for testing uneven surfaces.

• Portable interface: USB 2.0 power supply and data transmission, compatible with laptops and new desktop computers.

• Guided operation interface: a fully Chinese interface combined with a 140 page operation manual, which can be used without professional training.

5. Extended functions

• Wettability Envelope Diagram (WBA) ®）： Analyze the surface energy distribution and wetting characteristics of liquids.

• Fiber and monofilament testing: Supports Rod and Thread methods to measure fiber contact angle.

• Video recording function: The measurement process can be recorded in AVI format for easy reproduction and teaching demonstration.

Application scenarios

• Research field: Study of material wettability, surface free energy, and dynamic interface behavior.

• Industrial quality inspection: evaluation of coating adhesion, cleaning agent performance, and printing ink uniformity.

• Teaching Experiment: Wettability Teaching for Fundamentals of Chemistry and Materials Science in Higher Education Institutions.

Technical Specifications

The main differences between each model are marked with "*" below.

Special statement:

1. The above image information and technical parameters are subject to changes due to design without further notice, and the latest confirmed product information shall prevail.

2. Our company reserves all rights.
3. Asha ®、 RealDrop ®、 TrueDrop ®、 MicroDrop ®、 WBA ®、 ADSA ® It is a registered trademark of Shanghai Solon.

CAST^®Asha^®、ADSA^®、TrueDrop^®、RealDrop^®、TheDrop^®、MicroDrop^®、LMCA^®、Shsolon^®Solon^®Register a trademark for Shanghai Solon.

The above trademark is used for goods or services related to contact angle measuring instruments, surface tension meters, and interfacial tension meters. Infringement will be prosecuted!