KRUSS DSA25 E droplet shape analyzer
From one click wettability measurement to solid-liquid adhesion analysis
KRUSS DSA25E droplet shape analyzer product introduction:
The professional DSA25 droplet shape analyzer can determine the wettability of solids by measuring the contact angle and surface tension of liquids (such as coatings or adhesives). Thanks to the rapid replacement of the testing fluid system and the flexible combination of multiple testing methods, it can provide quick feedback for pre-processing in quality control, and also evaluate the resulting adhesion force.
KRUSS DSA25E droplet shape analyzer product application:
Quality assurance for activation processes, such as plasma treatment, corona treatment, or flame treatment
Check the wettability of plastic, glass, ceramics, wood, paper, or metal
Test the effectiveness of hydrophobic coatings and other coatings
Analyze the coating liquid and adhesive, evaluate their adhesion strength
Evaluate the long-term stability of the coating
Analyze (super) hydrophobicity and self-cleaning surfaces
Wetting analysis under controlled temperature and/or humidity
KRUSS DSA25E droplet shape analyzer measurement method:
Contact angle of liquid droplets on solid surfaces
Parallel dual droplet contact angle
Measure the contact angle between the bottom of the solid material immersed in the liquid phase and the bubbles
The forward and backward angles of droplets when rolling off a sloping surface
Calculate solid surface energy through contact angle data
Measuring surface or interfacial tension using the curved contour of liquid suspended at the bottom of the needle
Calculate surface tension by calculating the curvature of symmetrical droplets formed on a circular sample base
Calculate the adhesion related scientific parameters of interface contact
Calculate the polarity and non polarity of surface tension from contact angle and surface tension data
The contact angle immersed in the liquid of a cylindrical sample pool, typically consisting of fibers
Perform up to 20 consecutive measurements and display the results together
Measure the current setback angle to characterize the de wetting behavior
Measurement results of KRUSS DSA25E droplet shape analyzer:
static contact angle
Forward contact angle and backward contact angle
Contact angle of bubbles in liquid
roll angle
Measure surface free energy using the following model: Owens Wendt Rabel Kaelble (OWRK), Fowkes, Wu, Zisman, Equation of State
Surface tension of liquids and interfacial tension between two liquids
Adhesive force, solid/liquid interfacial tension, spreading coefficient
temperature
Practical application of KRUSS DSA25E droplet shape analyzer:
Surface treatment of wood
To optimize the measurement of surface tension and contact angle for wood protection and bonding
Wettability of contact lenses
Contact angle measurement for the development and quality assurance of biocompatible materials
Wetting and coating of textiles
To optimize the measurement of contact angle and surface tension of functional textile coatings
Adhesive with glass
Contact angle and surface tension during glass cleaning and coating
Adhesive with polymer
Contact angle and surface tension measurement: for optimizing plastic coatings
Application of surfactants
Application of Interface Chemical Measurement Method in the Development and Technical Application of Surfactants
Liquid needle——Obtain surface free energy within seconds
The emergence of liquid needles enables contact angle measurement technology to perfectly ensure quality. Learn more about the concept of combining speed and scientificity with liquid needles.
The dual titration system ensures fast and accurate measurement of surface free energy and surface tension
The software controlled micro constant pressure double titration system equipped with DSA25E ensures fast and accurate measurement of surface free energy. Liquid needle titration technology is based on the contact angle of two liquids for rapid one click measurement of surface free energy (SFE). An additional titration system can be used to add data from a third liquid to consolidate SFE results or measure the surface tension (SFT) of the liquid.
High quality zoom lens ensures the accuracy of droplet contact angle measurement
The DSA25E has a high-resolution camera and high-quality zoom lens, which can accurately display the optimal size of droplets. The high image quality achieved through this can accurately measure the contact angle or SFT. The use of instruments combined with the intelligent image evaluation algorithm of ADVANCE software for droplet shape analysis can provide accurate results.
Maximizing the repeatability of measurements and comprehensive adhesion analysis
The ADVANCE software supports liquid needles and can automatically measure SFE within one second. Easy to create automated programs can also be used to design standard procedures for sample analysis to maximize the repeatability of measurements. The optional software tool for data analysis combines SFE and SFT data to evaluate adhesion and calculate other scientific parameters of solid/liquid contact.
Optional tilt table——Characterization of low wettability
DSA25 tilting table: automatically analyzes (super) hydrophobic and self-cleaning surfaces through contact angle and rolling angle.
KRUSS DSA25 Comparison Table of Selection for Series Droplet Shape Analyzer (B/S/E)
| DSA25B(Basic manual) | DSA25S(Standard type) | DSA25E(Professional type) |
product positioning | Economic basic type, manual operation | Standard type, software controlled titration | Professional type, double titration+liquid needle |
Titration method | 1 × Manually adjust and add samples | 1 × Software controlled injector | 1 × Software controlled injector+ Liquid needle dual pressure titration (standard) |
syringe volume | Glass 500 μ L/1mL per use | Glass 450 μ L/disposable 900 μ L | Glass 2 × 450 μ L/disposable 900 μ L |
Titration resolution | – | 0.1 μL | 0.1 μL |
Titration speed | – | 0.02 ~ 25 μL/s | 0.02 ~ 25 μL/s |
Liquid Needle One Click SFE | ❌ Nothing | ❌ None (optional) | ✅ Standard configuration, completed in one second |
software | ADVANCE(Basic module) | ADVANCE(Contact angle+surface free energy+liquid tension) | ADVANCE(Full module) |
contact angle measurement | Static and bubble contact angle | Static/dynamic, forward/backward angle, tilt | Static/Dynamic, Forward/Backward, Tilt, Rolling Angle |
Surface Free Energy (SFE) | ❌ Nothing | ✅ Standard configuration (OWRK, Fowkes, Wu, Zisman, etc.) | ✅ Standard configuration+one click function |
Surface tension (SFT) | Optional (curvature method) | ✅ Standard configuration (hanging drop method) | ✅ Standard configuration (hanging drip/rising drip) |
Adhesive force analysis | ❌ Nothing | Optional | ✅ Standard configuration (adhesion, solid/liquid interfacial tension, spreading coefficient) |
Parallel Double Droplets | ❌ Nothing | ❌ Nothing | ✅ support |
Tilt table (optional) | External, 0-90 °, software controlled | Same left | Same left |
Temperature control options | Liquid/large chamber/Peltier/electric heating | Same left | Same left |
camera | CF04：2300 fps，1920×1200 | Same left | Same Left (Upgradeable to CF10 Expressway) |
lens | Manual focus, 6.5 x zoom | Same left | Same left |
lighting | High power monochrome LED (470nm) | Same left | Same left |
Maximum sample space | 320×∞×165 mm(Width x Depth x Height) | Same left | Same left |
Instrument size | 610×250×430 mm | Same left | Same left |
weight | 10 kg | 10 kg | 10 kg |
power consumption | 40 W | 100 W | 100 W |
Operating Temperature | 10~40°C | Same left | Same left |
Typical Applications | • Wettability testing of basic coatings
Quick testing of hydrophobic coatings
• Teaching demonstration | • Activation quality assurance (plasma/corona)
Wettability of Plastic/Glass/Metal
Surface cleanliness analysis | • Adhesion assessment (coating/adhesive)
• Superhydrophobic/self-cleaning surface
Long term stability of coatings
Temperature controlled wetting analysis |
target audience | Basic quality inspection, incoming material inspection, and small and medium-sized enterprises with limited budgets | Quality assurance, basic research and development, process control | High end R&D, coating/adhesive manufacturers, research institutions
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KRUSS DSA25E droplet shape analyzer product parameters:
project | parameter |
Instrument coverage range | 610mm x 250mm |
Contact angle range | 0–180° |
resolution | 0.01° |
lighting type | High power monochrome LED |
Instrument weight | 10kg |
Syringe/Liquid | Equipped with up to 8 software controlled syringes/liquids |
Please contact customer service for complete parameters |
