Contact Angle, Liquid Surface Tension, Surface Free Energy

DMo-series
 Product lineup
DMo-901
Fully automated computer-controlled contact
angle measuring system with 150x150mm 360o
rotation stage
 Computer-controlled rotation stage in X, Y and rotation axes, and
computer-controlled camera and dispenser unit in Z-axis.
 Fully automated mapping sequence (droplet generation → droplet
deposition → droplet analysis → stage movement) over the full
150x150mm stage area is possible by pre-setting coordinates.
 The optional multi dispenser system of up to five liquids allows for
“one-click” fully automated analysis of the surface free energy.
 The optional high capacity dispenser for one liquid allows for fully
automated measurement of contact angles for applications with
high liquid volume requirements.
 The automatic recognition of droplet deposition enables droplet
analysis after a pre-set time assuring reliable results under
constant conditions.
DMo-701
Fully automated computer-controlled contact
angle measuring system with 150x150mm stage
 Computer-controlled stage in X-axis and computer-controlled
camera and dispenser unit in Z-axis
 Automated measurement sequence (droplet generation → droplet
deposition → droplet analysis → stage movement) in X-direction
is possible by pre-setting commands.
 The automatic dispenser unit generates droplets with high accuracy
and assures precise measurements of advancing and receding
angles through its constant volumetric flow rate.
 The optional multi dispenser system of up to five liquids allows for
“one-click” fully automated analysis of the surface free energy.
 The automatic recognition of droplet deposition enables droplet
analysis after a pre-set time assuring reliable results under
constant conditions.

DMo-601
Computer-controlled analysis of static and
dynamic contact angles with 150x150mm stage
 Computer-controlled camera and dispenser unit in Z-axis
 Automated measurement sequence (droplet generation → droplet
deposition → droplet analysis) is possible by pre-setting
commands.
 The automatic dispenser unit generates droplets with high accuracy
and assures precise measurements of advancing and receding
angles through its constant volumetric flow rate.
 The automatic recognition of droplet deposition enables droplet
analysis after a pre-set time assuring reliable results under
constant conditions.
 The manual sample stage can be exactly adjusted to the desired
position and the syringe of the dispensing unit can be changed
quickly and easily.

DMo-501
Computer-controlled analysis of static and
dynamic contact angles with 150x150mm stage
 Manual sample stage in X and Y-axes, and manual camera and
dispenser unit in Z-axis.
 The manual sample stage can be exactly adjusted to the desired
position and the syringe of the dispensing unit can be changed
quickly and easily.
 The automatic dispenser unit generates droplets with high accuracy
and assures precise measurements of advancing and receding
angles through its constant volumetric flow rate.
 The automatic recognition of droplet deposition enables droplet
analysis after a pre-set time assuring reliable results under
constant conditions.
 Features common for all models
 Fast image capturing system with standard 125 fps at 640x480 resolution USB 3.0 camera, max. 333fps at 640x136 resolution
 Focusing aid with index graph and value displayed in the image screen helps operators to achieve perfect focus
 Movie converter converts data images to MPEG-1 or AVI movie format.
 The black & white threshold level to determine the binary image can be adjusted before and after measurement to optimize droplet analysis
 During analysis of the sessile drop, besides the contact angles, droplet volume, sessile drop volume, absorbed droplet volume, residual
droplet ratio, height and radius of sessile drop are also determined.
 Measured results are displayed in a spreadsheet-like table for easy reference and comparison.

Sample stage
 All models are equipped with a 150x150mm wide sample stage with a maximum
load capacity (temperature chamber + sample) of 1.4kgs.
 Stage travel distance: x-axis 150mm, y-axis 75mm
* DMo-901 and DMo-701 are equipped with motorized sample stage
 Possibility to mount temperature control chambers onto the stage
* Applicable sample size for temperature control chamber is about 150x75mm

Standard components of individual models

Common accessories
DMo-901 DMo-701 DMo-601 DMo-501
for all models
 Motorized camera and  Motorized camera and  Motorized camera and  Automatic single  Manual single dispenser
dispenser unit (z-axis) dispenser unit (Z-axis) dispenser unit (Z-axis) dispenser, incl.  Syringe set 22G (5x each/set)
and motorized stage in and motorized stage in  Automatic single dispenser controller  Teflon coated needles
X, Y and rotation axes X-direction dispenser 18G, 22G (2x each)
 Automatic single  Automatic single  Control box  Standard droplet sample
dispenser dispenser (Standard view)
 Control box  Control box

Droplet calibration standard

 The droplet calibration standard for standard view is a basic accessory for all models Droplet calibration standard
(standard view)
 It is made of soda-lime glass bearing one full circle for calibration and three droplet silhouettes of
5°, 60°and 108° for periodic inspections of measurement accuracy
 With the help of this tool, users can easily perform routine maintenance to ensure reliability of
their measurements over long periods of time
 A droplet calibration standard for calibration of the camera wide-view setting, as well as pendant
drop calibration standards for standard and wide-view setting can be obtained optionally
 A certificate of accuracy of the full circle and droplet silhouettes can be obtained optionally Droplet calibration standard
(wide view)

Measuring process

DMo- Positioning of first Generation of droplet Deposition of droplet Analysis of droplet Positioning of next 150x150mm full
model measurement point (control/recognition) measurement point scale continuous
measurements
501 ▲by rotary knob ● ▲ / ● ● ▲ ▲
601 ▲by rotary knob ● ● / ● ● ▲ ▲
701 ▲by command button ● ● / ● ● ● ▲
901 ● ● ● / ● ● ● ●
● automatic ▲ manual
 Specifications

DMo-901 DMo-701 DMo-601 DMo-501

USB 3.0 CCD camera with: 125fps at 640x480 pixels
Camera system 200fps at 640x278 pixels
333fps at 640x136 pixels
manual focus with 3 step manual zoom
Optical system
field of view: 6.6x4.9mm, 12.0x9.0mm, 17.3x13.0mm ±5%
contact angle: sessile drop (static), advancing/receding angle (dynamic)
sliding angle (dynamic)1)
Measuring methods
surface/interfacial tension: pendant drop (static and dynamic)
surface free energy of solids: sessile drop (static)
contact angle: /2, tangent, curve fitting (ellipse, circle)
Analysis methods surface/interfacial tension: Young-Laplace, ds/de
surface free energy of solids: Owens-Wendt, Kaelble-Uy, Kitazaki-Hata, Wu, acid-base, Zisman
contact angle: 0.01 to 180
Measuring range
surface/interfacial tension: 0.01 to 100mN/m
contact angle: 0.01
Resolution
surface/interfacial tension: 0.01mN/m
contact angle: 0.2
Accuracy2)
surface/interfacial tension: 0.2mN/m
Maximum sample size 150(W)x150(D)x16(H)mm 150(W)x150(D)x35(H)mm
Sample stage operation
X-axis 150mm (automatic) 150mm (automatic) 150mm (manual)
Y-axis 75mm (automatic) 75mm (manual) 75mm (manual)
Z-axis --- --- ---
Rotation axis 360° (automatic) --- ---
Dispenser operation
Z-axis (droplet deposition) 16mm (automatic) 35mm (automatic) 35mm (manual)
Droplet generation automatic automatic automatic
Dispensing resolution 0.1μl 0.1μl 0.1μl
standard: ambient
Measuring temperature optional: jacket type temperature-controlled (+5 to +90C)
heater type temperature-controlled (ambient to +180C and ambient to +380C)
Main instrument dimensions 297(W)x544(D)x305(H)mm
Main instrument weight 10.0kg 8.5kg 8.5kg 7.5kg
Control box dimensions 290(W)x240(D)x100(H)mm 260(W)x200(D)x70(H)mm
Control box weight 4.3kg 4.3kg 4.3kg 1.6kg
AC100-240V, 50/60 Hz AC100-240V, 50/60 Hz
Power supply
60W 123VA, 25W 103VA
1) Optional
2) Accuracy is the repeatability in terms of standard deviation based on manufacturer’s calibration standard

Optional accessories and customized solutions

The KYOWA DropMaster series can be easily adapted to meet particular customers’ requirements for special applications. We offer a wide range of
optional accessories such as jacket and heater-type temperature controlled sample stages and chambers, heater-type temperature controlled
dispenser, external tilting stage for measurements of roll-off angles, and a special module for measurements of roll-off speed and roll-off acceleration.

Customized solutions, such as specially designed sample stages for measurements on cylindrical samples with large diameters or on human arms and
legs are also possible.

For detailed information, please contact our sales partner or us directly at +81-48-483-2629 or at overseas-sales@face-kyowa.co.jp.

Specifications and designs are subject to change without notice. 1703