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  4. Contact Angle Meter
  5. DMs-401

DMs-401

DMs-401

DMs-401: standard device with manual dispenser

DMs-401

DMs-401: on an external tilting stage for roll-off angle measurements

DMs-401

DMs-401: sample stage with manual xy-axes

DMs-401

DMs-401: measurements of advancing/receding angles

DMs-401
DMs-401
DMs-401
DMs-401
  • Automatic recognition of droplet deposition
  • Live image display and droplet volume monitoring
  • Movie converter
  • Manual dispenser with a set of 5 glass syringes and 5 SUS needles for precise adjustment of droplet volume and quick refilling and replacement of liquid samples
  • Fine adjustable stage in z-axis for gentle deposition of droplets without distortion
  • Adjustable level of the body and stage
  • Droplet calibration standard for standard view, bearing one full circle for calibration and three droplet silhouettes of 5º, 60º, and 108º for periodic inspection of measurement accuracy

Hardware

  • Jacket- and heater-type chambers for temperature measurements from +10 to +380℃
  • Heater-type dispenser for temperature measurements from ambient to +380℃
  • Tilting stage for measurements of roll-off angles, incl. FAMAS software add-in [Sliding method]
  • Add-on module [Dynamic sliding method] for measurement of roll-off speed and roll-off acceleration. Only in combination with the tilting stage package
  • Fast image capturing system with standard 400 fps at 640x480 resolution USB3.0 CMOS camera, max. 2700fps at 640x64 resolution
  • Single automatic dispenser
  • Multi-manual dispenser holder
  • Multi-automatic dispenser system
  • Large capacity pump dispenser, incl. a 50ml liquid container
  • Surface free energy kit
  • Pendant drop kit (for standard & wide view)
  • Kit for captive-bubble-measurements
  • Droplet calibration standard (for wide 1 view)
  • Pendant drop calibration standard (for standard view)
  • Pendant drop calibration standard (for wide 1 and wide 2 view)
  • Determination of wettability of surfaces like glass, metal, plastics, ceramics at ambient temperature
  • Surface cleanliness
  • Determination of surface and interfacial tension using the pendant drop kit (standard & wide view)
  • Analysis of Surface free energy of solids
  • Determination of dynamic contact angles (advancing/receding angles and roll-off angle)
  • Coating property, repellency, characterization of droplet hysteresis
  • Initial spreading, absorbing property, effect of surface active agents
  • Adhesive property, characterizing surface modification, digitalization of hydrophilicity/hydrophobicity
  DMs-401
Camera system USB2.0 CMOS camera: 60fps at 640x480 pixels
Optical system

focus: manual focus with 3-step zoom
field of view: 5.3x4.0mm, 9.6x7.2mm, 13.6x10.2mm ±6%
Measuring methods

contact angle: sessile drop (static and dynamic)
surface/interfacial tension: pendant drop (static and dynamic)
Analysis methods



contact angle: θ/2, tangent, circle fitting, ellipse fitting
surface/interfacial tension: Young-Laplace method, ds/de method
surface free energy of solids: OWRK, Owens-Wendt, Kaelble-Uy, Kitazaki-Hata, Wu, acid-base, Zisman
Measuring range

contact angle: 0.1 to 180°
surface/interfacial tension: 0.1 to 100mN/m
Resolution

contact angle: 0.1°
surface/interfacial tension: 0.1mN/m
Accuracy1)

contact angle: 0.2°
surface/interfacial tension: 0.2mN/m
Maximum sample surface area and height (WxDxH) 150x100x35mm

Maximum sample weight 300g
Sample stage operation:
Z-axis
Droplet generation
Dispensing resolution


150mm, manually by a rotary knob
---
20mm, manually by a rotary knob
(additional 20mm by stage shifting mechanism)
Dispenser operation:
Z-axis
Droplet generation
Dispensing resolution

---
manually, by a rotary knob
0.1μl
Droplet deposition manually, by stage operation
Dimensions (WxDxH) 294x461x375mm
Weight ca. 6.5kg
Electric power:
Voltage
Frequency
Power consumption

AC100-240V
50/60Hz
5.5W 15VA
Operating environment

temperature: +10 to +35℃, humidity: 30-80%RH (non-condensing)
positioned away from sources of electrical noise and vibration

1) Accuracy is the repeatability in terms of standard deviation based on the manufacturer’s calibration standard

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