Lineup ofContact Angle Meters
Digest Information

Static / Dynamic Contact Angle
Surface / Interfacial Tension
Surface Free Energy
Adhesive Energy

The contact angle is an easy measurement method to determine the wettability of a solid substrate by a liquid. The liquid
will form a drop shape when depositing a droplet onto a solid substrate. The point where the solid, liquid, and vapor
meet is called the three-face point and determines the contact angle. The contact angle is also an indicator of wettability,dependent on the combination of solid substrate and liquid and the environment.
Contact angle measurements are reliable valuation techniques in various industrial fields. KYOWA is a leading
manufacturer with an extensive range of contact angle meters with models from special-purpose to multi-purpose tomeet multiple application demands in research & development and quality control.

Selected measurement methods of KYOWA's contact angle meters
Sessile drop method
After automatic droplet deposition recognition, automatedcontact angle measurements, either static or as a timefunction. Depending on the model, high-speed image
capture with a maximum of 2700fps is possible.
Applications: Initial spreading, absorbing property, the effect of surface-active agents

Extension/contraction method
Advancing/Receding angles are measured by increasing and decreasing the volume of a captivedroplet. The optional automatic dispenser system is required to ensure reliable measurements forthe volume change's smooth and precise dynamic motion.
Applications: Coating property, repellency, characterization of droplet hysteresis

Surface free energy analysis of solids
The surface free energies of solids and their polar and dispersive components are determined through contact angle measurements
of at least two different liquids. Different theories according to OWRK, Owens-Wendt, Kaelble-Uy, Kitazaki-Hata, Wu, acid-base,Zisman, interaction analysis (work of adhesion, interfacial free energy), Young-Dupré, and Zisman are available. The surface freeenergy analysis of liquids is also possible. An optional surface free energy kit with five probe liquids and needles is available.
Applications: Adhesive properties, characterization of surface modification, evaluation of hydrophilicity/hydrophobicity

Surface/interfacial tension of liquids
The optional pendant drop kit allows for measuring liquids' surface and interfacial tension
using the pendant drop method. The advantages compared to the conventional Wilhelmyplate method and du Noüy ring method are as follows:
Measurement with a small liquid amount (less than 1mL)
High-temperature control, such as molten polymer applications
Suitable for liquids whose surfaces change quickly after exposure to air

Sliding method (determination of roll-off-angle and hysteresis)
Advancing/receding angles are measured using an external stage, tilting the entire
measuring instrument. The angle at which a droplet starts sliding from the solid surface isdetermined as the sliding or roll-off angle. At the same time, the software analyzes theadhesive energy between the droplet and the solid surface. The optional sliding method kit
is required.
Applications: Repellency/hydrophobicity, characterization of droplet hysteresis

Dynamic sliding method
Characterization of the speed and acceleration of droplets rolling off an inclined solid
surface set at a specific angle with the help of a particular add-on module.
Applications: Repellency/hydrophobicity, characterization of droplet hysteresis

Further functions of the FAMAS analysis software➢ Automatic recognition of droplet deposition➢ Real-time droplet volume monitoring➢ Live image & focusing aid➢ Threshold level adjustment➢ Data chart & variable data
➢ Movie converterDropMaster series – multi-purpose models
Automatic Contact Angle Meter

DMo-902

Software-controlled stage in XY and rotation axis, softwarecontrolled droplet deposition, and 2700fps high-speed camera

DMo-702

Software-controlled stage in X- and manual in Y-axis, softwarecontrolled droplet deposition, and 2700fps high-speed camera

DMo-602Manual sample stage in XY-axis, software-controlled droplet
deposition, and 2700fps high-speed camera

DMo-502

Manual sample stage in XY-axis, manual droplet deposition, and2700fps high-speed camera

DMs-401

DMe-211Plus

Manual sample stage in XZ-axis, manual droplet deposition, and Manual sample stage in Z-axis, manual droplet deposition, and60fps camera
30fps camera

Measurement Methods (standard or with optional accessories)
Sessile drop method - static mode

Pendant drop method - interfacial tension measurement

Sessile drop method - dynamic as a function of timeSliding method - roll-off angle

Advancing & receding angles

Dynamic sliding method - roll-off speed & acceleration

Surface free energy analysis

Product Comparison

ST: standard
DMo-902

DMo-702

DMo-602

DMo-502

OP: option

NA: not available

DMs-401

DMe-211Plus

60fps
Maximum image capture rate
2700fps
2700fps
2700fps
2700fps
30fps
OP (2700fps)
manual focus with manual focus with manual focus with manual focus with manual focus with manual focus with
Optical system
3-step zoom
3-step zoom
3-step zoom
3-step zoom
3-step zoom
fixed zoom
Sample stage size
150x150mm
150x150mm
150x150mm
150x150mm
150x100mm
160x100mm
motorized X, Y,
motorized X
Stage travel axes
manual X, Y
manual X, Y
manual X, Z
manual Zand rotation
manual Y
Droplet deposition
motorized
motorized
motorized
manualmanualmanualAutomatic dispenser

STST

ST

ST

OP

NA

Sliding method

OP

OP

OP

OP

OP

NA

Temp.-controlled stage

NAOP

OP

OP

OP

NA

Temp.-controlled dispenser
Instrument dimensions(W*D*H)
Instrument weight

NAOP

OP

OP

OP

NA

297*544*249mm

297*544*249mm

297*544*249mm

297*544*249mm

294*461*288mm

170*346*283mm

about 10kg

about 9kg

about 9kg

about 8kg

about 6kg

about 2 kg

DropMaster series – wafer & disk samples of diameter up to 300mm
Wafer Cleanliness and Treatment Analyzer

DMo-902WA

Software-controlled stage in X and rotation axis, softwarecontrolled droplet deposition, and 2700fps high-speed camera

DMo-702WA

Software-controlled stage in X, manual rotation axis, softwarecontrolled droplet deposition, and 2700fps high-speed camera

DMo-502WA

Manual sample stage in X and rotation axis, manual droplet
deposition, and 2700fps high-speed camera

Contact Angle Meters – special-purpose models
Microscopic Contact Angle Meter

Portable Contact Angle Meter

MCA-4

PCA-11

The top-view camera and unique glass capillaries allow pin-point Single-click, fully automated operation, ideal for non-destructive
deposition of picoliter droplets on miniaturized surfaces.
surface evaluations and on-site quality control measurements.

Flat Panel Contact Angle Meter

DyneMaster Tensiometer

FPD-CP11

Non-contact measurements of contact angles on flat panel
displays such as LCD, LED, OLED, and silicon wafer.

DY-500/700

Dynamic contact angle using the Wilhelmy plate method &powder contact angle using the Washburn method.

Separate brochures for each model with more detailed information are available.
For detailed information, please get in touch with our sales partner or us directly at +81-48-483-2629 or overseas-sales@face-kyowa.co.jp.

Specifications and designs are subject to change without notice.
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