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DSA30S – Drop Shape Analyzer

The versatile instrument for semi-automatic wettability analysis

The Standard configuration of the DSA30 Drop Shape Analyzer is designed for the semi-automatic measurement of the static and dynamic contact angle and the scientific assessment of wettability by means of the surface free energy (SFE). The instrument is well-suitable for the reliable quality assurance of surface pre-treatment processes as well as the development and optimization of wetting and coating procedures. Accessories for ultrafast one-click SFE measurement as well as wetting analysis at higher temperatures enhance the spectrum of the instrument.

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  • Quality assurance and optimization of activation processes such as plasma treatment, flame treatment, or corona treatment before coating or bonding
  • Analyzing the wettability of plastics, glass, ceramics, wood, paper, or metal
  • Analyzing surface cleanliness
  • Wetting analysis at controlled temperature

MEASURING METHODS

  • Contact angle of a drop on a solid surface
  • Contact angle using a gas bubble beneath a solid surface in a liquid
  • Contact angles of two drops dosed in parallel
  • Surface free energy of a solid using contact angle data
  • Surface tension using the curvature of a perfectly symmetrical drop on a circular sample pedestal
  • Roll-off behavior and advancing/receding contact angle of a drop on a tilted surface
  • 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
  • Surface free energy (SFE) according to the following models: Owens-Wendt-Rabel-Kaelble (OWRK), Fowkes, Wu, Zisman, Equation of State
  • 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 no
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 optional
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
Drop deposition software-controlled
Cartridge/syringe (volume) glass (450 μL), disposable (900 μL)
Resolution 0.1 μL
Speed 0.02 to 25 µL/s

STAGES

Control x-axis: manual (software-controlled optional available)
y-axis: manual (software-controlled optional available)
z-axis: manual
Range –
Length x-axis: 100 mm
y-axis: 100 mm
z-axis: 45 mm
Resolution x-axis: 2 mm/turn
y-axis: 2 mm/turn
z-axis: 16 mm/turn
Accuracy x-axis: –
y-axis: –
z-axis: –

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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