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DSA30R – Drop Shape Analyzer

Analyses in interfacial rheology – time-saving and reproducible

Emulsions and foams are constantly in motion during production or transport. The interfaces of droplets or bubbles are stretched during these processes and the surface tension or interfacial tension responds to the stretching. The speed and degree of this response have an impact on the stability of food or personal care products and influence the yield in enhanced oil recovery (EOR). Interfacial rheology measurements with the DSA30R Drop Shape Analyzer give the relevant results for optimizing products and processes.

Category: Tags: , , Brand:

  • Emulsions and foams for food or personal care
  • Surfactant flooding mixtures and foam in enhanced oil recovery (EOR)
  • Demulsifiers
  • Defoamers and anti-foaming agents
  • Surfactant development

MEASURING METHODS

  • Interfacial rheological behavior of a pendant drop or a bubble with periodically alternating volume
  • Surface tension using the curvature of a perfectly symmetrical drop on a circular sample pedestal
  • Carrying out a measurement up to 20 consecutive times and displaying the results together

MEASURING RESULTS

  • Elastic modulus (storage modulus) E’
  • Viscous modulus (loss modulus) E”
  • Static surface and interfacial tension

INSTRUMENT DIMENSIONS

Footprint 610 mm × 250 mm (W × D)
Height 750 mm
Weight (without accessories) 13 kg

TEMPERATURE MEASUREMENT

Range of temperature measurement -10 to 70 °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 syringe
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)

ENVIRONMENT

Operating temperature 10 to 40 °C
Humidity without condensation

TEMPERATURE CONTROL

Equipment temperature-controlled syringe
chambers
cuvette
Type of temperature control liquid
Range of temperature control -10 to 70 °C
Resolution 0.1 °C
Flow-through thermostat with liquid

INTERFACES

PC USB 3.0
Oscillating Drop Module – ODM USB

HOUSING AND PERIPHERALS

Control keyboard PC keyboard for ADVANCE software operation available (KB20)
Levelling yes

SOFTWARE

Software type ADVANCE
Available software modules interfacial and surface tension of liquids
rheology

PENDANT DROP/RISING DROP

Available included
Results interfacial and surface tension
Range 0.01 to 2000 mN/m (software-based)
Resolution 0.01 mN/m (software-based)
Precision 0.2 mN/m (instrument-based)
Models Young-Laplace
Types (Pendant drop/Rising drop) static, dynamic

OSCILLATING DROP

Available included
Results E, E’, E”, phase shift
Programmable wave forms sine
Models Lucassen

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 manual
Cartridge/syringe (volume) glass (450 μL)
Resolution 0.1 μL with SY70
Speed 10 to 900 μL/min with SY70
Maximum volume variation 2.5 μL
Viscosity range max. 5000 mPas with NE45, max. 10 mPas with NE44
Frequency 0.001 to 30 Hz

STAGES

Control z-axis: manual
Height z- axis: 45 mm
Resolution 16.4 mm/turn

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

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