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Drop Shape Analyzer

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Drop Shape Analyzer – DSA25S for wettability measurements

Drop Shape Analyzer

DSA25S

Semi-automatic wettability analysis with high dosing precision

General specifications

Instrument dimensions

Footprint

610 mm × 250 mm (W × D)

Height

430 mm

Weight (without accessories)

10 kg

Interfaces

PC

USB 3.0

Environment

Operating temperature

10 to 40 °C

Humidity

without condensation

Power supply

Voltage

88 to 264 V

Power consumption

100 W

Frequency

50 to 60 Hz

Housing and peripherals

Levelling

yes

Sample dimensions

Maximum sample space

320 mm × ∞ × 165 mm (W × D × H (without axes))

Temperature control

Equipment

Optional:
- temperature-controlled sample stage
- chamber
- cuvette

Type of temperature control

liquid
liquid (large)
Peltier
electrical

Range of temperature control

liquid: 5 to 90 °C
liquid (large): -10 to 130 °C
Peltier: -30 to 160 °C
electrical: 50 to 400 °C

Maximum sample space

132 mm × 132 mm × 27 mm (W × D × H)
(Large liquid chamber)

Resolution

0.1 °C

Flow-through thermostat

with liquid

Inert gas

yes

Temperature measurement

Range

-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)

Locations

sample stage
chamber
cuvette

External sensor

2 connectors (PT100)

Measurement specifications

Sessile drop

Results

contact angle

Range

0 to 180° (software-based)

Resolution

0.01° (software-based)

Accuracy

0.1° (instrument-based)

Models

conic section
polynomial
circle
Young-Laplace
height-width

Type

advancing
receding
static
dynamic
tilting

Software

Software type

ADVANCE

Software modules

Contact angle (recommended)

Surface free energy of solids (recommended)

Interfacial and surface tension of liquids:
- pendant drop, rising drop (optional)
- Contrained Sessile Drop (optional)

Adhesion Analysis (optional)

Remote Control API (optional)

Surface free energy of solids

Results

surface free energy
polar & disperse part
acid & base part
H-bond part

Models

equation of state
Zisman
Fowkes
Wu
Owens-Wendt-Rabel-Kaelble
Schultz-1
extended Fowkes
acid-base theory

Pendant drop/rising drop

Results

surface tension
interfacial tension

Range

0.01 to 2000 mN/m (software-based)

Resolution

0.01 mN/m (software-based)

Models

Young-Laplace

Type

static
dynamic

Captive bubble

Results

contact angle

Range

0 to 180° (software-based)

Resolution

0.01° (software-based)

Accuracy

0.1° (instrument-based)

Models

conic section
polynomial
circle
Young-Laplace
height-width

Type

advancing
receding
static
dynamic
tilting

Product group specifications

Dosing System

Syringe Dosing

1 × software-controlled

Liquid Needle double pressure dosing

optional

Drop deposition (syringe dosing)

manual

Syringes, volume

glass (1 × 450 μL), disposable (900 μL)

Resolution (syringe dosing)

0.1 μL

Speed (syringe dosing)

0.02 to 25 µL/s

Camera system (standard)

Model

Camera CF04

Connection

USB 3.0

Resolution

1920 × 1200 px

Frame rate

2300 fps

Dark noise

7 electrons

Dynamic range

73 dB

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

Illumination

Type

high power monochromatic LED

Wave length, dominant

470 nm

Field of light

Ø 42 mm

Stages

Control

z-axis: manual (movable in x- and y-direction)

Length

z-axis: 45 mm

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

Tilting (optional)

Types

external tilting table

Control

software-controlled

Range

0 to 90°

Resolution

0.01°

Accuracy

0.5°

Liquid Needle pressure dosing system

Included in setup

optional

Type

double

Control

software-controlled

Cartridge, volume

disposable (1 mL)

Resolution

0.1 μL

Speed

fixed (fast jet)

Camera system (optional)

Model

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

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