Contact angle meter
Basic Contact Angle Meter QD100
Contact angle meter for simple and precise measurements. Clean and compact instrument with user-friendly design.
Product Details
QD100 basic optical contact angle measuring instrument is a basic entry-level contact angle measuring instrument based on droplet shape analysis, Manual dropper system, an industrial-grade contour lens, an industrial-grade adjustable brightness monochromatic cold LED light source, and a professional-grade interfacial chemistry analysis system.
Analytical Capabilities
- Measure static contact angles
- solid surface free energy, and its distribution.
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
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 | QD100 | QD100S |
|---|---|---|
| name | Basic Manual Liquid Drop Contact Angle meter | Basic Automatic Liquid Drop Contact Angle meter |
| General Indicators | ||
| Angle range | 0°＜θ＜180° | 0°＜θ＜180° |
| precision | 0.1° | 0.1° |
| Baseline fitting | Automatic and manual | Automatic and manual |
| Test accuracy | 0.1° | 0.1° |
| Instrument size | 535mm*168mm*460mm | 535mm*168mm*460mm |
| Fuselage material | Aviation aluminum | Aviation aluminum |
| weight | About 9 KG | About 9 KG |
| Power Supply | AC100~240V 50/60HZ | AC100~240V 50/60HZ |
| Accessories | Optional accessories: Professional fiber fixtures, specialized films, and plant leaf fixtures for analyzing contact angle values on fibrous or uneven-surface samples. | 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 | Manual:45mm |
| Y-shift back and forth | Manual:75mm | Manual:75mm |
| Z-move up and down | Manual:45mm | Manual:45mm |
| Sample Stage Tilting System | - | - |
| Sample stage dimensions | 130mm*150mm(customizable) | 130mm*150mm(customizable) |
| Maximum sample that can be placed | 200（W）*∞(L)*30(H)mm | 200（W）*∞(L)*30(H)mm |
| Sample Stage Movement Method | Manual | Manual |
| Injection System | ||
| Needle Tube YZ Mobile | 20*35 | 20*35 |
| Dropping control movement | 30mm | 30mm |
| Liquid adding mode | Manual | Automatic |
| Dropping accuracy | 0.1ul | 0.1ul |
| Pipetting method | Manual | Manual(Upgradeable automatic) |
| needle | Ten 0.5mm stainless steel needles (replaceable) and 10 0 0.25mm superhydrophobic needles (replaceable) are standard. | Ten 0.5mm stainless steel needles (replaceable) and 10 0 0.25mm superhydrophobic needles (replaceable) are standard. |
| Imaging System | ||
| camera | China Daheng (Onsemi Line Exposure)（OnsemiLine Exposure） | China Daheng (Onsemi Line Exposure)（OnsemiLine Exposure） |
| Lens | industrial Continuous Magnification Lens 0.7X-4.5X | industrial Continuous Magnification Lens 0.7X-4.5X |
| focal distance | ±2.5mm adjustable | ±2.5mm adjustable |
| Image shooting method | Single sheet, interval, continuous | Single sheet, interval, continuous |
| Shooting interval time | 500-3600000ms | 500-3600000ms |
| Video recording mode | Video recording, rebroadcasting and synthesis | Video recording, rebroadcasting and synthesis |
| Maximum shooting speed | 80frames /s | 80frames /s |
| Service life | More than 20,000 h | More than 20,000 h |
| Light source wavelength | 465nm | 465nm |
| Light Source System | Industrial-grade adjustable brightness monochromatic cold light LED light source | Industrial-grade adjustable brightness monochromatic cold light LED light source |
| Water Contact Angle Testing and Analysis | ||
| Measurement Method | Sessile Drop、Captive Drop、wetted fiber、Surface FreeEnergy。 | Sessile Drop、Captive Drop、wetted fiber、Surface Free Energy 。 |
| Contact Angle Calculation Method（static contact angle） | 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 | 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 | Combining fully automated testing with manual testing |
| Dynamic Contact Angle Measurement | - | - (Upgradeable) |
| Baseline fitting | Convex Surface, Surface Roughness Correction | Convex Surface, Surface Roughness Correction |
| Baseline fitting | Automatic and manual | Automatic and manual |
| Rolling angle value | - | - |
| 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. | 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. |
| Report Output | Automatically generated reports exportable in Excel, Word, PDF, and diagram formats. | Automatically generated reports exportable in Excel, Word, PDF, and diagram formats. |