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DSA30E – Drop Shape Analyzer

Versatile automated wetting and adhesion analysis of solids and liquids

The Expert version of the DSA30 Drop Shape Analyzer enables solids and liquids in wetting and coating processes to be analyzed comprehensively. The high degree of automation with easily programmable features provides for user-independent  and  results, which is ideal for the use in quality control. However, the DSA30E is also frequently used in R&D due to its versatility in controlling thermal conditions and its scientific tools for analyzing the solid/liquid contact.

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  • Quality assurance of activation processes such as plasma treatment, flame treatment, or corona treatment
  • Analyzing wettability of plastics, glass, ceramics, wood, paper, or metal
  • Analyzing the effectiveness of hydrophobic coatings and other coatings
  • Analyzing coating liquids and adhesives and assessing their adhesion
  • Assessing long-term stability of coatings
  • Analyzing (super-) hydrophobic and self-cleaning surfaces
  • Analyzing homogeneity of cleanliness and wettability and measuring differences between coated/uncoated or treated/untreated areas
  • Wetting analysis at controlled temperature and/or humidity

MEASURING METHODS

  • Contact angle of a drop on a solid surface
  • Contact angles of two drops dosed in parallel
  • Automated position-dependent contact angle measurement and evaluation
  • Contact angle using a gas bubble beneath a solid surface in a liquid
  • Roll-off behavior and advancing/receding contact angle of a drop on a tilted surface
  • Surface free energy of a solid using contact angle data
  • Calculating adhesion-related scientific parameters for the interfacial contact
  • Surface or interfacial tension using the curvature of a drop or bubble at the tip of a needle
  • Surface tension using the curvature of a perfectly symmetrical drop on a circular sample pedestal
  • Calculating the polar and disperse part of the surface tension from contact angle and surface tension data
  • Carrying out a measurement up to 20 consecutive times and displaying the results together
  • Remote control of ADVANCE for integration in custom-designed, complex automations

MEASURING RESULTS

  • Static contact angle
  • Advancing and receding contact angle
  • Contact angle using a bubble in a liquid
  • Roll-off angle
  • Surface free energy (SFE) according to the following models: Owens-Wendt-Rabel-Kaelble (OWRK), Fowkes, Extended Fowkes, Van Oss & Good (Acid-Base), Schultz, Wu, Zisman, Equation of State
  • Position-dependent contact angle and SFE
  • Surface tension of a liquid and interfacial tension between two liquids
  • Work of adhesion, solid/liquid interfacial tension, spreading coefficient
  • Temperature

INSTRUMENT DIMENSIONS

Footprint 610 mm × 250 mm (W × D)
Height 610 mm
Weight (without accessories) 10 kg

TEMPERATURE MEASUREMENT

Range of temperature measurement -50 to 400 °C
Resolution 0.1 °C
Precision 0.1 °C
Accuracy 1/3 DIN B (±0.1 °C at 0 °C to ±0.8 °C at 400 °C)
Location of temperature measurement sample stage
chamber
cuvette
External sensor 2 connectors (PT100)

POWER SUPPLY

Voltage 88 to 264 VAC
Power consumption 100 W
Frequency 50 to 60 Hz

SAMPLE DIMENSIONS

Maximum sample size 320 mm × ∞ × 275 mm (W × D × H) (without axes)
Maximum measuring surface –

ENVIRONMENT

Operating temperature 10 to 40 °C
Humidity without condensation

TEMPERATURE CONTROL

Equipment temperature-controlled sample stage
chambers
cuvette
Type of temperature control liquid
electrical
Peltier
Range of temperature control -30 (with Tempering Chamber – TC40) to 400 °C (with Tempering Chamber – TC21)
Maximum sample space 132 mm × 132 mm × 27 mm (W × D × H) (with Tempering Chamber – TC11)
Resolution 0.1 K
Flow-through thermostat with liquid
Inert gas yes

INTERFACES

PC USB 3.0

HOUSING AND PERIPHERALS

Compartment –
Needle protection shield yes
Camera und optics housing –
Control keyboard PC keyboard for ADVANCE software operation available (KB20)
Levelling yes

SOFTWARE

Software type ADVANCE
Available software modules contact angle
surface free energy of solids
interfacial and surface tension of liquids
Adhesion Analysis
Remote Control API

SURFACE FREE ENERGY OF SOLIDS

Available included
Results surface free energy (SFE)
Models equation of state
Zisman
Fowkes
Wu
Owens-Wendt-Rabel-Kaelble
Schultz-1
extended Fowkes
acid-base theory

CAPTIVE BUBBLE

Available included
Results contact angle (CA)
Range 0 to 180° (software-based)
Resolution 0.01° (software-based)
Accuracy 0.1° (instrument-based)
Models conic section
polynom
circle
Young-Laplace
height-width
Type advancing
receding
static
dynamic
tilting
(additional accessories may be required)

SESSILE DROP

Available included
Results contact angle (CA)
Range 0 to 180° (software-based)
Resolution 0.01° (software-based)
Accuracy 0.1° (instrument-based)
Models conic section
polynom
circle
Young-Laplace
height-width
Type advancing
receding
static
dynamic
tilting
(additional accessories may be required)

PENDANT DROP/RISING DROP

Available included
Results interfacial tension (IFT)/surface tension (SFT)
Range 0.01 to 2000 mN/m (software-based)
Resolution 0.01 mN/m (software-based)
Models Young-Laplace
Types (Pendant drop/Rising drop) static, dynamic

CAMERA SYSTEM (STANDARD)

Type Camera CF04
Connection USB 3.0
Resolution 1920 × 1200 px
Frame rate 2300 fps
Dark noise 7 electrons
Dynamic range 73 dB

ILLUMINATION

Type high power monochromatic LED
Wave length, dominant 470 nm
Field of light Ø 42 mm

OPTICS (STANDARD)

Focus manual
Zoom 6.5× zoom, manual
View angle ±3°
Field of view CF04: 3.2 mm × 3.2 mm to 18.5 mm × 18.5 mm
Resolution of optics CF04: 2.5 to 16.2 μm

CAMERA SYSTEM (OPTIONAL)

Type High Speed Camera CF06
Connection USB 3.0
Resolution 640 × 480 px
Frame rate 3400 fps
Dark noise 10.5 electrons
Dynamic range 56.6 dB

DOSING SYSTEM

Dosing software-controlled (4×) + manual (1×)
Drop deposition software-controlled
Cartridge/syringe (volume) glass (450 μL), disposable (3 mL)
Resolution 0.1 μL
Speed 0.02 to 25 µL/s

STAGES

Control x-axis: software-controlled
y-axis: software-controlled
z-axis: software-controlled
Range –
Length x-axis: 100 mm
y-axis: 100 mm
z-axis: 38 mm
Resolution x-axis: 10 μm
y-axis: 10 μm
z-axis: 10 μm
Accuracy x-axis: 100 μm
y-axis: 100 μm
z-axis: 100 μm

OPTICS (OPTIONAL)

Focus manual
Zoom 6.5× zoom, manual
View angle ±3°
Field of view CF06: 1.4 mm × 1 mm to 8.1 mm × 6 mm
Resolution of optics CF06: 2.1 to 13.3 μm

DOUBLE PRESSURE DOSING SYSTEM (OPTIONAL)

Drop deposition software-controlled
Cartridge, volume disposable (1 mL)
Resolution 0.1 μL
Speed fixed

TILTING (OPTIONAL)

Types internal tilting table
Control software-controlled
Range 0 to 90°
Resolution 0.01°
Accuracy 0.3°

DOUBLE PRESSURE DOSING SYSTEM

Drop deposition –
Cartridge, volume –
Resolution –
Speed –

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