Contact angle meter
Standard Contact Angle Meter QD200S
Convenient and versatile contact angle meter for measuring contact angle meter ,Surface tension，sruface free energy
Product Details
The QD200S Standard Automatic Liquid Drop Motion/Contact Angle Meter/Interfacial Tension Meter is a standard contact angle measuring instrument based on liquid drop shape analysis. It comes standard with automatic liquid dispensing, an industrial-grade contour lens, an industrial-grade adjustable brightness monochromatic cold light LED light source, and a professional-grade interfacial chemical analysis system.
What you can measure
- static contact angle
Dynamic contact angle: Advancing angle, receding angle, hysteresis angle (liquid addition/subtraction method).
solid surface free energy, and its distribution.(Dispersion forces, polar forces, hydrogen bonding forces).
Wetting process Analysis
Wettability Analysis
Surface tension
Measurements
Sessile drop
For static contact angle measurement of a liquid droplets
captive bubble
For static contact angle measurement of a gas bubble
wetted fiber
For static contact angle measurement with a fiber/rod
Surface Free Energy
Use for characterizing the wettability of materials
Advancing Angle
For dynamic contact angle measurement
Receding Angle
For dynamic contact angle measurement
Pendant Drop
For surface and interfacial tension
Pendant Drop
For surface and interfacial tension
Principle of Optical Contact Angle meters
The contact angle refers to the angle θ formed between the tangent line to the gas-liquid interface at the triple point of gas, liquid, and solid, and the solid-liquid boundary line on the liquid side. This angle serves as a measure of wettability. Contact angle measurement is currently the primary method for assessing surface properties.The larger the contact angle θ, the more hydrophobic the surface, resulting in poorer wetting performance; the smaller θ, the more hydrophilic the surface, leading to better wetting
Specifications
| model | QD 200S |
|---|---|
| name | Standard Automatic Liquid Droplet Contact Angle Meter/Interfacial Tension Meter |
| General Indicators | |
| Angle range | 0°＜θ＜180° |
| precision | 0.1° |
| Baseline fitting | Automatic and manual |
| Test accuracy | 0.1° |
| Instrument size | 535mm*168mm*460mm |
| Fuselage material | Aviation aluminum |
| weight | About 9 KG |
| Power Supply | AC100~240V 50/60HZ |
| Software operating system requirements | Windows 10(64-bit) |
| Accessories | Optional accessories: Professional fiber fixtures, specialized films, and plant leaf fixtures for analyzing contact angle values on fibrous or uneven-surface samples. |
| Sample platform system | |
| Left and right x movement | Manual:45mm |
| Y-shift back and forth | Manual:75mm |
| Z-move up and down | Manual:45mm |
| Sample Stage Tilting System | Optional: Manual tilt or electric tilt system |
| Sample stage dimensions | 130mm*150mm(customizable) |
| Maximum sample that can be placed | 200（W）*∞(L)*30(H)mm |
| Sample Stage Movement Method | Manual |
| Injection System | |
| Needle Tube YZ Mobile | 20*35 |
| Dropping control movement | 30mm |
| Liquid adding mode | Automatic |
| Dropping speed | 0.01-25ul/s |
| Dropping accuracy | 0.1ul |
| Pipetting method | Manual(Upgradeable automatic) |
| needle | Ten 0.5mm stainless steel needles (replaceable) and 10 0 0.25mm superhydrophobic needles (replaceable) are standard. |
| Imaging System | |
| camera | SONY imported high-speed industrial-grade chips from Japan (Onsemi exposure) |
| Lens | industrial Continuous Magnification Lens 0.7X-4.5X |
| focal distance | ±2.5mm adjustable |
| Image shooting method | Single sheet, interval, continuous |
| Shooting interval time | 500-3600000ms |
| Video recording mode | Video recording, rebroadcasting and synthesis |
| Maximum shooting speed | 80frames /s |
| Service life | More than 20,000 h |
| Light source wavelength | 465nm |
| Light Source System | Industrial blue cold light source imported from the United States (effectively avoiding evaporation of droplets due to heat emitted by the light source) |
| Contact Angle Testing and Analysis | |
| Measurement Method | Sessile Drop、Captive Drop、wetted fiber、Pendant Drop(Surface tension)、Advancing Angle 、Receding Angle 、Surface Free Energy 。 |
| Contact Angle Calculation Method | Automatic fitting method (ms-level one-key automatic fitting, without manual error), three-point fitting, five-point fitting, automatic measurement (including Circle method/ Oblique Circle fitting, Ellipse method /Oblique Ellipse fitting), concave-convex surface measurement, B-Snake |
| Analytical Methods | Combining fully automated testing with manual testing |
| Dynamic Contact Angle | - |
| Rolling Angle | Optional: Manual or Automatic Tilting Platform |
| Automatic Surface Correction | Convex Surface, Surface Roughness Correction |
| Baseline fitting | Automatic and manual |
| Surface Free Energy Analysis | |
| 7 Methods of Surface Energy Analysis | Fowks method, OWRK method, Zisman method, EOS method, Acid-Base Theory method, Wu harmonic mean method and Extended Fowkes method (37 kinds of liquid databases are pre-installed in the software, and the liquid performance parameters can be established by themselves) can be directly transferred for surface energy estimation, and the data in the liquid database can be added, deleted and modified by itself. Solid surface energy, dispersion force, polar force, hydrogen bonding force, van der Waals component, Lewis acid component, Lewis base component and so on can be obtained respectively. |
| Surface Tension Analysis | |
| Measurement method | Automatic fitting+manual fitting |
| Test Range | 0.01mN/m-2000mN/m |
| precision | 0.01mN/m |
| Calculation Method | Suspended Drop Method |
| Wettability Analysis | |
| Wettability Analysis | One-click automatic analysis of spreading coefficient, adhesion work, and adhesion tension |
| Report Output | Automatically generated reports exportable in Excel, Word, PDF, and diagram formats. |